--- a/layout/base/nsLayoutUtils.cpp
+++ b/layout/base/nsLayoutUtils.cpp
@@ -7658,17 +7658,17 @@ nsLayoutUtils::Shutdown()
 
   Preferences::UnregisterCallback(GridEnabledPrefChangeCallback,
                                   GRID_ENABLED_PREF_NAME);
   Preferences::UnregisterCallback(WebkitPrefixEnabledPrefChangeCallback,
                                   WEBKIT_PREFIXES_ENABLED_PREF_NAME);
   nsComputedDOMStyle::UnregisterPrefChangeCallbacks();
 
   // so the cached initial quotes array doesn't appear to be a leak
-  nsStyleQuotes::Shutdown();
+  nsStyleList::Shutdown();
 }
 
 /* static */
 void
 nsLayoutUtils::RegisterImageRequest(nsPresContext* aPresContext,
                                     imgIRequest* aRequest,
                                     bool* aRequestRegistered)
 {

--- a/layout/base/nsQuoteList.cpp
+++ b/layout/base/nsQuoteList.cpp
@@ -33,17 +33,17 @@ nsQuoteNode::InitTextFrame(nsGenConList*
 
 const nsString*
 nsQuoteNode::Text()
 {
   NS_ASSERTION(mType == eStyleContentType_OpenQuote ||
                mType == eStyleContentType_CloseQuote,
                "should only be called when mText should be non-null");
   const nsStyleQuoteValues::Array& quotePairs =
-    mPseudoFrame->StyleQuotes()->GetQuotePairs();
+    mPseudoFrame->StyleList()->GetQuotePairs();
   int32_t quotesCount = quotePairs.Length(); // 0 if 'quotes:none'
   int32_t quoteDepth = Depth();
 
   // Reuse the last pair when the depth is greater than the number of
   // pairs of quotes.  (Also make 'quotes: none' and close-quote from
   // a depth of 0 equivalent for the next test.)
   if (quoteDepth >= quotesCount)
     quoteDepth = quotesCount - 1;

--- a/layout/style/generate-stylestructlist.py
+++ b/layout/style/generate-stylestructlist.py
@@ -23,17 +23,16 @@ LENGTH_DEP = ["Font", "Visibility"]
 # if any.
 STYLE_STRUCTS = [("INHERITED",) + x for x in [
     # Inherited style structs.
     ("Font",           "CheckFontCallback",     NORMAL_DEP + ["Visibility"]),
     ("Color",          "CheckColorCallback",    NORMAL_DEP),
     ("List",           "nullptr",               NORMAL_DEP + LENGTH_DEP),
     ("Text",           "CheckTextCallback",     NORMAL_DEP + LENGTH_DEP + COLOR_DEP),
     ("Visibility",     "nullptr",               NORMAL_DEP),
-    ("Quotes",         "nullptr",               NORMAL_DEP),
     ("UserInterface",  "nullptr",               NORMAL_DEP),
     ("TableBorder",    "nullptr",               NORMAL_DEP + LENGTH_DEP),
     ("SVG",            "nullptr",               NORMAL_DEP + LENGTH_DEP + COLOR_DEP),
     ("Variables",      "CheckVariablesCallback",[]),
 ]] + [("RESET",) + x for x in [
     # Reset style structs.
     ("Background",     "nullptr",   NORMAL_DEP + LENGTH_DEP + COLOR_DEP),
     ("Position",       "nullptr",   NORMAL_DEP + LENGTH_DEP),

--- a/layout/style/nsCSSPropList.h
+++ b/layout/style/nsCSSPropList.h
@@ -138,17 +138,16 @@
 #define CSS_PROP_BACKGROUND(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, stylestructoffset_, animtype_) CSS_PROP(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, Background, stylestructoffset_, animtype_)
 #define CSS_PROP_LIST(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, stylestructoffset_, animtype_) CSS_PROP(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, List, stylestructoffset_, animtype_)
 #define CSS_PROP_POSITION(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, stylestructoffset_, animtype_) CSS_PROP(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, Position, stylestructoffset_, animtype_)
 #define CSS_PROP_TEXT(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, stylestructoffset_, animtype_) CSS_PROP(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, Text, stylestructoffset_, animtype_)
 #define CSS_PROP_TEXTRESET(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, stylestructoffset_, animtype_) CSS_PROP(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, TextReset, stylestructoffset_, animtype_)
 #define CSS_PROP_DISPLAY(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, stylestructoffset_, animtype_) CSS_PROP(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, Display, stylestructoffset_, animtype_)
 #define CSS_PROP_VISIBILITY(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, stylestructoffset_, animtype_) CSS_PROP(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, Visibility, stylestructoffset_, animtype_)
 #define CSS_PROP_CONTENT(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, stylestructoffset_, animtype_) CSS_PROP(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, Content, stylestructoffset_, animtype_)
-#define CSS_PROP_QUOTES(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, stylestructoffset_, animtype_) CSS_PROP(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, Quotes, stylestructoffset_, animtype_)
 #define CSS_PROP_USERINTERFACE(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, stylestructoffset_, animtype_) CSS_PROP(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, UserInterface, stylestructoffset_, animtype_)
 #define CSS_PROP_UIRESET(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, stylestructoffset_, animtype_) CSS_PROP(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, UIReset, stylestructoffset_, animtype_)
 #define CSS_PROP_TABLE(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, stylestructoffset_, animtype_) CSS_PROP(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, Table, stylestructoffset_, animtype_)
 #define CSS_PROP_TABLEBORDER(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, stylestructoffset_, animtype_) CSS_PROP(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, TableBorder, stylestructoffset_, animtype_)
 #define CSS_PROP_MARGIN(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, stylestructoffset_, animtype_) CSS_PROP(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, Margin, stylestructoffset_, animtype_)
 #define CSS_PROP_PADDING(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, stylestructoffset_, animtype_) CSS_PROP(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, Padding, stylestructoffset_, animtype_)
 #define CSS_PROP_BORDER(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, stylestructoffset_, animtype_) CSS_PROP(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, Border, stylestructoffset_, animtype_)
 #define CSS_PROP_OUTLINE(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, stylestructoffset_, animtype_) CSS_PROP(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, Outline, stylestructoffset_, animtype_)
@@ -223,20 +222,16 @@
 #ifndef CSS_PROP_VISIBILITY
 #define CSS_PROP_VISIBILITY(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, stylestructoffset_, animtype_) /* nothing */
 #define DEFINED_CSS_PROP_VISIBILITY
 #endif
 #ifndef CSS_PROP_CONTENT
 #define CSS_PROP_CONTENT(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, stylestructoffset_, animtype_) /* nothing */
 #define DEFINED_CSS_PROP_CONTENT
 #endif
-#ifndef CSS_PROP_QUOTES
-#define CSS_PROP_QUOTES(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, stylestructoffset_, animtype_) /* nothing */
-#define DEFINED_CSS_PROP_QUOTES
-#endif
 #ifndef CSS_PROP_USERINTERFACE
 #define CSS_PROP_USERINTERFACE(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, stylestructoffset_, animtype_) /* nothing */
 #define DEFINED_CSS_PROP_USERINTERFACE
 #endif
 #ifndef CSS_PROP_UIRESET
 #define CSS_PROP_UIRESET(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, stylestructoffset_, animtype_) /* nothing */
 #define DEFINED_CSS_PROP_UIRESET
 #endif
@@ -3060,17 +3055,17 @@ CSS_PROP_DISPLAY(
         // For position: sticky/fixed
         CSS_PROPERTY_CREATES_STACKING_CONTEXT |
         CSS_PROPERTY_ABSPOS_CB,
     "",
     VARIANT_HK,
     kPositionKTable,
     CSS_PROP_NO_OFFSET,
     eStyleAnimType_None)
-CSS_PROP_QUOTES(
+CSS_PROP_LIST(
     quotes,
     quotes,
     Quotes,
     CSS_PROPERTY_PARSE_FUNCTION,
     "",
     0,
     nullptr,
     CSS_PROP_NO_OFFSET,
@@ -4450,17 +4445,16 @@ CSS_PROP_FONT(
 #undef CSS_PROP_BACKGROUND
 #undef CSS_PROP_LIST
 #undef CSS_PROP_POSITION
 #undef CSS_PROP_TEXT
 #undef CSS_PROP_TEXTRESET
 #undef CSS_PROP_DISPLAY
 #undef CSS_PROP_VISIBILITY
 #undef CSS_PROP_CONTENT
-#undef CSS_PROP_QUOTES
 #undef CSS_PROP_USERINTERFACE
 #undef CSS_PROP_UIRESET
 #undef CSS_PROP_TABLE
 #undef CSS_PROP_TABLEBORDER
 #undef CSS_PROP_MARGIN
 #undef CSS_PROP_PADDING
 #undef CSS_PROP_BORDER
 #undef CSS_PROP_OUTLINE
@@ -4507,20 +4501,16 @@ CSS_PROP_FONT(
 #ifdef DEFINED_CSS_PROP_VISIBILITY
 #undef CSS_PROP_VISIBILITY
 #undef DEFINED_CSS_PROP_VISIBILITY
 #endif
 #ifdef DEFINED_CSS_PROP_CONTENT
 #undef CSS_PROP_CONTENT
 #undef DEFINED_CSS_PROP_CONTENT
 #endif
-#ifdef DEFINED_CSS_PROP_QUOTES
-#undef CSS_PROP_QUOTES
-#undef DEFINED_CSS_PROP_QUOTES
-#endif
 #ifdef DEFINED_CSS_PROP_USERINTERFACE
 #undef CSS_PROP_USERINTERFACE
 #undef DEFINED_CSS_PROP_USERINTERFACE
 #endif
 #ifdef DEFINED_CSS_PROP_UIRESET
 #undef CSS_PROP_UIRESET
 #undef DEFINED_CSS_PROP_UIRESET
 #endif

--- a/layout/style/nsCSSProps.cpp
+++ b/layout/style/nsCSSProps.cpp
@@ -3140,23 +3140,16 @@ enum TableBorderCheckCounter {
 
 enum ContentCheckCounter {
   #define CSS_PROP_CONTENT ENUM_DATA_FOR_PROPERTY
   #include "nsCSSPropList.h"
   #undef CSS_PROP_CONTENT
   ePropertyCount_for_Content
 };
 
-enum QuotesCheckCounter {
-  #define CSS_PROP_QUOTES ENUM_DATA_FOR_PROPERTY
-  #include "nsCSSPropList.h"
-  #undef CSS_PROP_QUOTES
-  ePropertyCount_for_Quotes
-};
-
 enum TextCheckCounter {
   #define CSS_PROP_TEXT ENUM_DATA_FOR_PROPERTY
   #include "nsCSSPropList.h"
   #undef CSS_PROP_TEXT
   ePropertyCount_for_Text
 };
 
 enum TextResetCheckCounter {

--- a/layout/style/nsComputedDOMStyle.cpp
+++ b/layout/style/nsComputedDOMStyle.cpp
@@ -1466,17 +1466,17 @@ nsComputedDOMStyle::DoGetCounterReset()
   }
 
   return valueList.forget();
 }
 
 already_AddRefed<CSSValue>
 nsComputedDOMStyle::DoGetQuotes()
 {
-  const auto& quotePairs = StyleQuotes()->GetQuotePairs();
+  const auto& quotePairs = StyleList()->GetQuotePairs();
 
   if (quotePairs.IsEmpty()) {
     RefPtr<nsROCSSPrimitiveValue> val = new nsROCSSPrimitiveValue;
     val->SetIdent(eCSSKeyword_none);
     return val.forget();
   }
 
   RefPtr<nsDOMCSSValueList> valueList = GetROCSSValueList(false);

--- a/layout/style/nsRuleNode.cpp
+++ b/layout/style/nsRuleNode.cpp
@@ -1911,22 +1911,16 @@ static const uint32_t gTableBorderFlags[
 };
 
 static const uint32_t gContentFlags[] = {
 #define CSS_PROP_CONTENT FLAG_DATA_FOR_PROPERTY
 #include "nsCSSPropList.h"
 #undef CSS_PROP_CONTENT
 };
 
-static const uint32_t gQuotesFlags[] = {
-#define CSS_PROP_QUOTES FLAG_DATA_FOR_PROPERTY
-#include "nsCSSPropList.h"
-#undef CSS_PROP_QUOTES
-};
-
 static const uint32_t gTextFlags[] = {
 #define CSS_PROP_TEXT FLAG_DATA_FOR_PROPERTY
 #include "nsCSSPropList.h"
 #undef CSS_PROP_TEXT
 };
 
 static const uint32_t gTextResetFlags[] = {
 #define CSS_PROP_TEXTRESET FLAG_DATA_FOR_PROPERTY
@@ -2534,22 +2528,16 @@ nsRuleNode::SetDefaultOnRoot(const nsSty
       return table;
     }
     case eStyleStruct_Content:
     {
       nsStyleContent* content = new (mPresContext) nsStyleContent(mPresContext);
       aContext->SetStyle(eStyleStruct_Content, content);
       return content;
     }
-    case eStyleStruct_Quotes:
-    {
-      nsStyleQuotes* quotes = new (mPresContext) nsStyleQuotes(mPresContext);
-      aContext->SetStyle(eStyleStruct_Quotes, quotes);
-      return quotes;
-    }
     case eStyleStruct_UserInterface:
     {
       nsStyleUserInterface* ui = new (mPresContext) nsStyleUserInterface(mPresContext);
       aContext->SetStyle(eStyleStruct_UserInterface, ui);
       return ui;
     }
     case eStyleStruct_UIReset:
     {
@@ -7686,16 +7674,57 @@ nsRuleNode::ComputeListData(void* aStart
                             const nsRuleData* aRuleData,
                             nsStyleContext* aContext,
                             nsRuleNode* aHighestNode,
                             const RuleDetail aRuleDetail,
                             const RuleNodeCacheConditions aConditions)
 {
   COMPUTE_START_INHERITED(List, list, parentList)
 
+  // quotes: inherit, initial, none, [string string]+
+  const nsCSSValue* quotesValue = aRuleData->ValueForQuotes();
+  switch (quotesValue->GetUnit()) {
+  case eCSSUnit_Null:
+    break;
+  case eCSSUnit_Inherit:
+  case eCSSUnit_Unset:
+    conditions.SetUncacheable();
+    list->SetQuotesInherit(parentList);
+    break;
+  case eCSSUnit_Initial:
+    list->SetQuotesInitial();
+    break;
+  case eCSSUnit_None:
+    list->SetQuotesNone();
+    break;
+  case eCSSUnit_PairList:
+  case eCSSUnit_PairListDep: {
+    const nsCSSValuePairList* ourQuotes = quotesValue->GetPairListValue();
+
+    nsStyleQuoteValues::Array quotePairs;
+    quotePairs.SetLength(ListLength(ourQuotes));
+
+    size_t index = 0;
+    nsAutoString buffer;
+    while (ourQuotes) {
+      MOZ_ASSERT(ourQuotes->mXValue.GetUnit() == eCSSUnit_String &&
+                 ourQuotes->mYValue.GetUnit() == eCSSUnit_String,
+                 "improper list contents for quotes");
+      quotePairs[index].first  = ourQuotes->mXValue.GetStringValue(buffer);
+      quotePairs[index].second = ourQuotes->mYValue.GetStringValue(buffer);
+      ++index;
+      ourQuotes = ourQuotes->mNext;
+    }
+    list->SetQuotes(Move(quotePairs));
+    break;
+  }
+  default:
+    MOZ_ASSERT(false, "unexpected value unit");
+  }
+
   // list-style-type: string, none, inherit, initial
   const nsCSSValue* typeValue = aRuleData->ValueForListStyleType();
   switch (typeValue->GetUnit()) {
     case eCSSUnit_Unset:
     case eCSSUnit_Inherit: {
       conditions.SetUncacheable();
       nsString type;
       parentList->GetListStyleType(type);
@@ -8838,70 +8867,16 @@ nsRuleNode::ComputeContentData(void* aSt
       content->ContentAt(i).TrackImage(aContext->PresContext());
     }
   }
 
   COMPUTE_END_RESET(Content, content)
 }
 
 const void*
-nsRuleNode::ComputeQuotesData(void* aStartStruct,
-                              const nsRuleData* aRuleData,
-                              nsStyleContext* aContext,
-                              nsRuleNode* aHighestNode,
-                              const RuleDetail aRuleDetail,
-                              const RuleNodeCacheConditions aConditions)
-{
-  COMPUTE_START_INHERITED(Quotes, quotes, parentQuotes)
-
-  // quotes: inherit, initial, none, [string string]+
-  const nsCSSValue* quotesValue = aRuleData->ValueForQuotes();
-  switch (quotesValue->GetUnit()) {
-  case eCSSUnit_Null:
-    break;
-  case eCSSUnit_Inherit:
-  case eCSSUnit_Unset:
-    conditions.SetUncacheable();
-    quotes->SetQuotesInherit(parentQuotes);
-    break;
-  case eCSSUnit_Initial:
-    quotes->SetQuotesInitial();
-    break;
-  case eCSSUnit_None:
-    quotes->SetQuotesNone();
-    break;
-  case eCSSUnit_PairList:
-  case eCSSUnit_PairListDep: {
-    const nsCSSValuePairList* ourQuotes = quotesValue->GetPairListValue();
-
-    nsStyleQuoteValues::Array quotePairs;
-    quotePairs.SetLength(ListLength(ourQuotes));
-
-    size_t index = 0;
-    nsAutoString buffer;
-    while (ourQuotes) {
-      MOZ_ASSERT(ourQuotes->mXValue.GetUnit() == eCSSUnit_String &&
-                 ourQuotes->mYValue.GetUnit() == eCSSUnit_String,
-                 "improper list contents for quotes");
-      quotePairs[index].first  = ourQuotes->mXValue.GetStringValue(buffer);
-      quotePairs[index].second = ourQuotes->mYValue.GetStringValue(buffer);
-      ++index;
-      ourQuotes = ourQuotes->mNext;
-    }
-    quotes->SetQuotes(Move(quotePairs));
-    break;
-  }
-  default:
-    MOZ_ASSERT(false, "unexpected value unit");
-  }
-
-  COMPUTE_END_INHERITED(Quotes, quotes)
-}
-
-const void*
 nsRuleNode::ComputeXULData(void* aStartStruct,
                            const nsRuleData* aRuleData,
                            nsStyleContext* aContext,
                            nsRuleNode* aHighestNode,
                            const RuleDetail aRuleDetail,
                            const RuleNodeCacheConditions aConditions)
 {
   COMPUTE_START_RESET(XUL, xul, parentXUL)

--- a/layout/style/nsRuleNode.h
+++ b/layout/style/nsRuleNode.h
@@ -678,23 +678,16 @@ protected:
   const void*
     ComputeContentData(void* aStartStruct,
                        const nsRuleData* aRuleData,
                        nsStyleContext* aContext, nsRuleNode* aHighestNode,
                        RuleDetail aRuleDetail,
                        const mozilla::RuleNodeCacheConditions aConditions);
 
   const void*
-    ComputeQuotesData(void* aStartStruct,
-                      const nsRuleData* aRuleData,
-                      nsStyleContext* aContext, nsRuleNode* aHighestNode,
-                      RuleDetail aRuleDetail,
-                      const mozilla::RuleNodeCacheConditions aConditions);
-
-  const void*
     ComputeTextData(void* aStartStruct,
                     const nsRuleData* aRuleData,
                     nsStyleContext* aContext, nsRuleNode* aHighestNode,
                     RuleDetail aRuleDetail,
                     const mozilla::RuleNodeCacheConditions aConditions);
 
   const void*
     ComputeTextResetData(void* aStartStruct,

--- a/layout/style/nsStyleContext.cpp
+++ b/layout/style/nsStyleContext.cpp
@@ -955,17 +955,16 @@ nsStyleContext::CalcStyleDifference(nsSt
   DO_STRUCT_DIFFERENCE(UserInterface);
   DO_STRUCT_DIFFERENCE(Visibility);
   DO_STRUCT_DIFFERENCE(Outline);
   DO_STRUCT_DIFFERENCE(TableBorder);
   DO_STRUCT_DIFFERENCE(Table);
   DO_STRUCT_DIFFERENCE(UIReset);
   DO_STRUCT_DIFFERENCE(Text);
   DO_STRUCT_DIFFERENCE(List);
-  DO_STRUCT_DIFFERENCE(Quotes);
   DO_STRUCT_DIFFERENCE(SVGReset);
   DO_STRUCT_DIFFERENCE(SVG);
 #undef EXTRA_DIFF_ARGS
 #define EXTRA_DIFF_ARGS , PeekStyleVisibility()
   DO_STRUCT_DIFFERENCE(Position);
 #undef EXTRA_DIFF_ARGS
 #define EXTRA_DIFF_ARGS /* nothing */
   DO_STRUCT_DIFFERENCE(Font);

--- a/layout/style/nsStyleStruct.cpp
+++ b/layout/style/nsStyleStruct.cpp
@@ -676,51 +676,119 @@ nsChangeHint nsStyleOutline::CalcDiffere
 // nsStyleList
 //
 nsStyleList::nsStyleList(StyleStructContext aContext) 
   : mListStylePosition(NS_STYLE_LIST_STYLE_POSITION_OUTSIDE),
     mListStyleType(NS_LITERAL_STRING("disc")),
     mCounterStyle(aContext.BuildCounterStyle(mListStyleType))
 {
   MOZ_COUNT_CTOR(nsStyleList);
+  SetQuotesInitial();
 }
 
 nsStyleList::~nsStyleList() 
 {
   MOZ_COUNT_DTOR(nsStyleList);
 }
 
 nsStyleList::nsStyleList(const nsStyleList& aSource)
   : mListStylePosition(aSource.mListStylePosition),
     mListStyleType(aSource.mListStyleType),
     mCounterStyle(aSource.mCounterStyle),
+    mQuotes(aSource.mQuotes),
     mImageRegion(aSource.mImageRegion)
 {
   SetListStyleImage(aSource.GetListStyleImage());
   MOZ_COUNT_CTOR(nsStyleList);
 }
 
-nsChangeHint nsStyleList::CalcDifference(const nsStyleList& aOther) const
+void
+nsStyleList::SetQuotesInherit(const nsStyleList* aOther)
+{
+  mQuotes = aOther->mQuotes;
+}
+
+void
+nsStyleList::SetQuotesInitial()
 {
+  if (!sInitialQuotes) {
+    // The initial value for quotes is the en-US typographic convention:
+    // outermost are LEFT and RIGHT DOUBLE QUOTATION MARK, alternating
+    // with LEFT and RIGHT SINGLE QUOTATION MARK.
+    static const char16_t initialQuotes[8] = {
+      0x201C, 0, 0x201D, 0, 0x2018, 0, 0x2019, 0
+    };
+
+    sInitialQuotes = new nsStyleQuoteValues;
+    sInitialQuotes->mQuotePairs.AppendElement(
+        std::make_pair(nsDependentString(&initialQuotes[0], 1),
+                       nsDependentString(&initialQuotes[2], 1)));
+    sInitialQuotes->mQuotePairs.AppendElement(
+        std::make_pair(nsDependentString(&initialQuotes[4], 1),
+                       nsDependentString(&initialQuotes[6], 1)));
+  }
+
+  mQuotes = sInitialQuotes;
+}
+
+void
+nsStyleList::SetQuotesNone()
+{
+  if (!sNoneQuotes) {
+    sNoneQuotes = new nsStyleQuoteValues;
+  }
+  mQuotes = sNoneQuotes;
+}
+
+void
+nsStyleList::SetQuotes(nsStyleQuoteValues::Array&& aValues)
+{
+  mQuotes = new nsStyleQuoteValues;
+  mQuotes->mQuotePairs = Move(aValues);
+}
+
+const nsStyleQuoteValues::Array&
+nsStyleList::GetQuotePairs() const
+{
+  return mQuotes->mQuotePairs;
+}
+
+nsChangeHint
+nsStyleList::CalcDifference(const nsStyleList& aOther) const
+{
+  // If the quotes implementation is ever going to change we might not need
+  // a framechange here and a reflow should be sufficient.  See bug 35768.
+  if (mQuotes != aOther.mQuotes &&
+      (mQuotes || aOther.mQuotes) &&
+      GetQuotePairs() != aOther.GetQuotePairs()) {
+    return NS_STYLE_HINT_FRAMECHANGE;
+  }
   if (mListStylePosition != aOther.mListStylePosition)
     return NS_STYLE_HINT_FRAMECHANGE;
   if (EqualImages(mListStyleImage, aOther.mListStyleImage) &&
       mCounterStyle == aOther.mCounterStyle) {
     if (mImageRegion.IsEqualInterior(aOther.mImageRegion)) {
       if (mListStyleType != aOther.mListStyleType)
         return nsChangeHint_NeutralChange;
       return NS_STYLE_HINT_NONE;
     }
     if (mImageRegion.width == aOther.mImageRegion.width &&
         mImageRegion.height == aOther.mImageRegion.height)
       return NS_STYLE_HINT_VISUAL;
   }
   return NS_STYLE_HINT_REFLOW;
 }
 
+StaticRefPtr<nsStyleQuoteValues>
+nsStyleList::sInitialQuotes;
+
+StaticRefPtr<nsStyleQuoteValues>
+nsStyleList::sNoneQuotes;
+
+
 // --------------------
 // nsStyleXUL
 //
 nsStyleXUL::nsStyleXUL(StyleStructContext aContext)
 { 
   MOZ_COUNT_CTOR(nsStyleXUL);
   mBoxAlign  = NS_STYLE_BOX_ALIGN_STRETCH;
   mBoxDirection = NS_STYLE_BOX_DIRECTION_NORMAL;
@@ -3487,107 +3555,16 @@ nsresult nsStyleContent::AllocateContent
       mContentCount = 0;
       return NS_ERROR_OUT_OF_MEMORY;
     }
   }
   mContentCount = aCount;
   return NS_OK;
 }
 
-// ---------------------
-// nsStyleQuotes
-//
-
-nsStyleQuotes::nsStyleQuotes(StyleStructContext aContext)
-{
-  MOZ_COUNT_CTOR(nsStyleQuotes);
-  SetQuotesInitial();
-}
-
-nsStyleQuotes::~nsStyleQuotes()
-{
-  MOZ_COUNT_DTOR(nsStyleQuotes);
-}
-
-nsStyleQuotes::nsStyleQuotes(const nsStyleQuotes& aSource)
-  : mQuotes(aSource.mQuotes)
-{
-  MOZ_COUNT_CTOR(nsStyleQuotes);
-}
-
-void
-nsStyleQuotes::SetQuotesInherit(const nsStyleQuotes* aOther)
-{
-  mQuotes = aOther->mQuotes;
-}
-
-void
-nsStyleQuotes::SetQuotesInitial()
-{
-  if (!sInitialQuotes) {
-    // The initial value for quotes is the en-US typographic convention:
-    // outermost are LEFT and RIGHT DOUBLE QUOTATION MARK, alternating
-    // with LEFT and RIGHT SINGLE QUOTATION MARK.
-    static const char16_t initialQuotes[8] = {
-      0x201C, 0, 0x201D, 0, 0x2018, 0, 0x2019, 0
-    };
-
-    sInitialQuotes = new nsStyleQuoteValues;
-    sInitialQuotes->mQuotePairs.AppendElement(
-        std::make_pair(nsDependentString(&initialQuotes[0], 1),
-                       nsDependentString(&initialQuotes[2], 1)));
-    sInitialQuotes->mQuotePairs.AppendElement(
-        std::make_pair(nsDependentString(&initialQuotes[4], 1),
-                       nsDependentString(&initialQuotes[6], 1)));
-  }
-
-  mQuotes = sInitialQuotes;
-}
-
-void
-nsStyleQuotes::SetQuotesNone()
-{
-  if (!sNoneQuotes) {
-    sNoneQuotes = new nsStyleQuoteValues;
-  }
-  mQuotes = sNoneQuotes;
-}
-
-void
-nsStyleQuotes::SetQuotes(nsStyleQuoteValues::Array&& aValues)
-{
-  mQuotes = new nsStyleQuoteValues;
-  mQuotes->mQuotePairs = Move(aValues);
-}
-
-const nsStyleQuoteValues::Array&
-nsStyleQuotes::GetQuotePairs() const
-{
-  return mQuotes->mQuotePairs;
-}
-
-nsChangeHint
-nsStyleQuotes::CalcDifference(const nsStyleQuotes& aOther) const
-{
-  // If the quotes implementation is ever going to change we might not need
-  // a framechange here and a reflow should be sufficient.  See bug 35768.
-  if (mQuotes != aOther.mQuotes &&
-      mQuotes->mQuotePairs != aOther.mQuotes->mQuotePairs) {
-    return NS_STYLE_HINT_FRAMECHANGE;
-  }
-
-  return NS_STYLE_HINT_NONE;
-}
-
-StaticRefPtr<nsStyleQuoteValues>
-nsStyleQuotes::sInitialQuotes;
-
-StaticRefPtr<nsStyleQuoteValues>
-nsStyleQuotes::sNoneQuotes;
-
 
 // --------------------
 // nsStyleTextReset
 //
 
 nsStyleTextReset::nsStyleTextReset(StyleStructContext aContext)
 { 
   MOZ_COUNT_CTOR(nsStyleTextReset);

--- a/layout/style/nsStyleStruct.h
+++ b/layout/style/nsStyleStruct.h
@@ -43,27 +43,28 @@ class nsTextFrame;
 class imgIContainer;
 struct nsStyleVisibility;
 
 // Includes nsStyleStructID.
 #include "nsStyleStructFwd.h"
 
 // Bits for each struct.
 // NS_STYLE_INHERIT_BIT defined in nsStyleStructFwd.h
-#define NS_STYLE_INHERIT_MASK              0x000ffffff
+#define NS_STYLE_INHERIT_MASK              0x0007fffff
 
 // Bits for inherited structs.
 #define NS_STYLE_INHERITED_STRUCT_MASK \
   ((nsStyleStructID_size_t(1) << nsStyleStructID_Inherited_Count) - 1)
 // Bits for reset structs.
 #define NS_STYLE_RESET_STRUCT_MASK \
   (((nsStyleStructID_size_t(1) << nsStyleStructID_Reset_Count) - 1) \
    << nsStyleStructID_Inherited_Count)
 
 // Additional bits for nsStyleContext's mBits:
+// Free bit                                0x000800000
 // See nsStyleContext::HasTextDecorationLines
 #define NS_STYLE_HAS_TEXT_DECORATION_LINES 0x001000000
 // See nsStyleContext::HasPseudoElementData.
 #define NS_STYLE_HAS_PSEUDO_ELEMENT_DATA   0x002000000
 // See nsStyleContext::RelevantLinkIsVisited
 #define NS_STYLE_RELEVANT_LINK_VISITED     0x004000000
 // See nsStyleContext::IsStyleIfVisited
 #define NS_STYLE_IS_STYLE_IF_VISITED       0x008000000
@@ -81,18 +82,19 @@ struct nsStyleVisibility;
 // See nsStyleContext::FindChildWithRules
 #define NS_STYLE_INELIGIBLE_FOR_SHARING    0x200000000
 // See nsStyleContext::HasChildThatUsesResetStyle
 #define NS_STYLE_HAS_CHILD_THAT_USES_RESET_STYLE 0x400000000
 // See nsStyleContext::GetPseudoEnum
 #define NS_STYLE_CONTEXT_TYPE_SHIFT        35
 
 // Additional bits for nsRuleNode's mDependentBits:
+// Free bit                                 0x00800000
 #define NS_RULE_NODE_IS_ANIMATION_RULE      0x01000000
-// Free bit here!
+// Free bit                                 0x02000000
 #define NS_RULE_NODE_USED_DIRECTLY          0x04000000
 #define NS_RULE_NODE_IS_IMPORTANT           0x08000000
 #define NS_RULE_NODE_LEVEL_MASK             0xf0000000
 #define NS_RULE_NODE_LEVEL_SHIFT            28
 
 // Additional bits for nsRuleNode's mNoneBits:
 #define NS_RULE_NODE_HAS_ANIMATION_DATA     0x80000000
 
@@ -1347,16 +1349,32 @@ protected:
 
   bool          mHasCachedOutline;
   uint8_t       mOutlineStyle;    // [reset] See nsStyleConsts.h
 
   nscoord       mTwipsPerPixel;
 };
 
 
+/**
+ * An object that allows sharing of arrays that store 'quotes' property
+ * values.  This is particularly important for inheritance, where we want
+ * to share the same 'quotes' value with a parent style context.
+ */
+class nsStyleQuoteValues
+{
+public:
+  typedef nsTArray<std::pair<nsString, nsString>> Array;
+  NS_INLINE_DECL_REFCOUNTING(nsStyleQuoteValues);
+  Array mQuotePairs;
+
+private:
+  ~nsStyleQuoteValues() {}
+};
+
 struct nsStyleList
 {
   explicit nsStyleList(StyleStructContext aContext);
   nsStyleList(const nsStyleList& aStyleList);
   ~nsStyleList(void);
 
   void* operator new(size_t sz, nsStyleList* aSelf) CPP_THROW_NEW { return aSelf; }
   void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {
@@ -1377,16 +1395,21 @@ struct nsStyleList
   static nsChangeHint DifferenceAlwaysHandledForDescendants() {
     // CalcDifference never returns the reflow hints that are sometimes
     // handled for descendants as hints not handled for descendants.
     return nsChangeHint_NeedReflow |
            nsChangeHint_ReflowChangesSizeOrPosition |
            nsChangeHint_ClearAncestorIntrinsics;
   }
 
+  static void Shutdown() {
+    sInitialQuotes = nullptr;
+    sNoneQuotes = nullptr;
+  }
+
   imgRequestProxy* GetListStyleImage() const { return mListStyleImage; }
   void SetListStyleImage(imgRequestProxy* aReq)
   {
     if (mListStyleImage)
       mListStyleImage->UnlockImage();
     mListStyleImage = aReq;
     if (mListStyleImage)
       mListStyleImage->LockImage();
@@ -1405,24 +1428,36 @@ struct nsStyleList
   }
   void SetListStyleType(const nsSubstring& aType,
                         nsPresContext* aPresContext)
   {
     SetListStyleType(aType, aPresContext->
                      CounterStyleManager()->BuildCounterStyle(aType));
   }
 
+  const nsStyleQuoteValues::Array& GetQuotePairs() const;
+
+  void SetQuotesInherit(const nsStyleList* aOther);
+  void SetQuotesInitial();
+  void SetQuotesNone();
+  void SetQuotes(nsStyleQuoteValues::Array&& aValues);
+
   uint8_t   mListStylePosition;         // [inherited]
 private:
   nsString  mListStyleType;             // [inherited]
   RefPtr<mozilla::CounterStyle> mCounterStyle; // [inherited]
   RefPtr<imgRequestProxy> mListStyleImage; // [inherited]
+  RefPtr<nsStyleQuoteValues> mQuotes;   // [inherited]
   nsStyleList& operator=(const nsStyleList& aOther) = delete;
 public:
   nsRect        mImageRegion;           // [inherited] the rect to use within an image
+
+private:
+  static mozilla::StaticRefPtr<nsStyleQuoteValues> sInitialQuotes;
+  static mozilla::StaticRefPtr<nsStyleQuoteValues> sNoneQuotes;
 };
 
 struct nsStyleGridLine
 {
   // http://dev.w3.org/csswg/css-grid/#typedef-grid-line
   // XXXmats we could optimize memory size here
   bool mHasSpan;
   int32_t mInteger;  // 0 means not provided
@@ -2793,79 +2828,16 @@ struct nsStyleCounterData
 {
   nsString  mCounter;
   int32_t   mValue;
 };
 
 
 #define DELETE_ARRAY_IF(array)  if (array) { delete[] array; array = nullptr; }
 
-/**
- * An object that allows sharing of arrays that store 'quotes' property
- * values.  This is particularly important for inheritance, where we want
- * to share the same 'quotes' value with a parent style context.
- */
-class nsStyleQuoteValues
-{
-public:
-  typedef nsTArray<std::pair<nsString, nsString>> Array;
-  NS_INLINE_DECL_REFCOUNTING(nsStyleQuoteValues);
-  Array mQuotePairs;
-
-private:
-  ~nsStyleQuoteValues() {}
-};
-
-struct nsStyleQuotes
-{
-  explicit nsStyleQuotes(StyleStructContext aContext);
-  nsStyleQuotes(const nsStyleQuotes& aQuotes);
-  ~nsStyleQuotes();
-
-  void* operator new(size_t sz, nsStyleQuotes* aSelf) CPP_THROW_NEW { return aSelf; }
-  void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {
-    return aContext->PresShell()->
-      AllocateByObjectID(mozilla::eArenaObjectID_nsStyleQuotes, sz);
-  }
-  void Destroy(nsPresContext* aContext) {
-    this->~nsStyleQuotes();
-    aContext->PresShell()->
-      FreeByObjectID(mozilla::eArenaObjectID_nsStyleQuotes, this);
-  }
-  nsChangeHint CalcDifference(const nsStyleQuotes& aOther) const;
-  static nsChangeHint MaxDifference() {
-    return NS_STYLE_HINT_FRAMECHANGE;
-  }
-  static nsChangeHint DifferenceAlwaysHandledForDescendants() {
-    // CalcDifference never returns the reflow hints that are sometimes
-    // handled for descendants as hints not handled for descendants.
-    return nsChangeHint_NeedReflow |
-           nsChangeHint_ReflowChangesSizeOrPosition |
-           nsChangeHint_ClearAncestorIntrinsics;
-  }
-
-  static void Shutdown() {
-    sInitialQuotes = nullptr;
-    sNoneQuotes = nullptr;
-  }
-
-  const nsStyleQuoteValues::Array& GetQuotePairs() const;
-
-  void SetQuotesInherit(const nsStyleQuotes* aOther);
-  void SetQuotesInitial();
-  void SetQuotesNone();
-  void SetQuotes(nsStyleQuoteValues::Array&& aValues);
-
-private:
-  RefPtr<nsStyleQuoteValues> mQuotes;  // [inherited]
-
-  static mozilla::StaticRefPtr<nsStyleQuoteValues> sInitialQuotes;
-  static mozilla::StaticRefPtr<nsStyleQuoteValues> sNoneQuotes;
-};
-
 struct nsStyleContent
 {
   explicit nsStyleContent(StyleStructContext aContext);
   nsStyleContent(const nsStyleContent& aContent);
   ~nsStyleContent(void);
 
   void* operator new(size_t sz, nsStyleContent* aSelf) CPP_THROW_NEW { return aSelf; }
   void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {