--- a/browser/base/content/test/static/browser_all_files_referenced.js
+++ b/browser/base/content/test/static/browser_all_files_referenced.js
@@ -119,21 +119,16 @@ var whitelist = [
   // Starting from here, files in the whitelist are bugs that need fixing.
   // Bug 1339424 (wontfix?)
   {file: "chrome://browser/locale/taskbar.properties",
    platforms: ["linux", "macosx"]},
   // Bug 1356031 (only used by devtools)
   {file: "chrome://global/skin/icons/error-16.png"},
   // Bug 1348362
   {file: "chrome://global/skin/icons/warning-64.png", platforms: ["linux"]},
-  // Bug 1348525
-  {file: "chrome://global/skin/splitter/grip-bottom.gif", platforms: ["linux"]},
-  {file: "chrome://global/skin/splitter/grip-left.gif", platforms: ["linux"]},
-  {file: "chrome://global/skin/splitter/grip-right.gif", platforms: ["linux"]},
-  {file: "chrome://global/skin/splitter/grip-top.gif", platforms: ["linux"]},
   // Bug 1348526
   {file: "chrome://global/skin/tree/sort-asc-classic.png", platforms: ["linux"]},
   {file: "chrome://global/skin/tree/sort-asc.png", platforms: ["linux"]},
   {file: "chrome://global/skin/tree/sort-dsc-classic.png", platforms: ["linux"]},
   {file: "chrome://global/skin/tree/sort-dsc.png", platforms: ["linux"]},
   // Bug 1344267
   {file: "chrome://marionette/content/test_anonymous_content.xul"},
   {file: "chrome://marionette/content/test_dialog.properties"},

--- a/layout/xul/nsSplitterFrame.cpp
+++ b/layout/xul/nsSplitterFrame.cpp
@@ -244,25 +244,17 @@ nsSplitterFrame::GetCursor(const nsPoint
 
 nsresult
 nsSplitterFrame::AttributeChanged(int32_t aNameSpaceID,
                                   nsAtom* aAttribute,
                                   int32_t aModType)
 {
   nsresult rv = nsBoxFrame::AttributeChanged(aNameSpaceID, aAttribute,
                                              aModType);
-  // if the alignment changed. Let the grippy know
-  if (aAttribute == nsGkAtoms::align) {
-    // tell the slider its attribute changed so it can
-    // update itself
-    nsIFrame* grippy = nullptr;
-    nsScrollbarButtonFrame::GetChildWithTag(nsGkAtoms::grippy, this, grippy);
-    if (grippy)
-      grippy->AttributeChanged(aNameSpaceID, aAttribute, aModType);
-  } else if (aAttribute == nsGkAtoms::state) {
+  if (aAttribute == nsGkAtoms::state) {
     mInner->UpdateState();
   }
 
   return rv;
 }
 
 /**
  * Initialize us. If we are in a box get our alignment so we know what direction we are

--- a/toolkit/content/jar.mn
+++ b/toolkit/content/jar.mn
@@ -89,17 +89,16 @@ toolkit.jar:
    content/global/bindings/radio.xml           (widgets/radio.xml)
    content/global/bindings/remote-browser.xml  (widgets/remote-browser.xml)
    content/global/bindings/resizer.xml         (widgets/resizer.xml)
    content/global/bindings/richlistbox.xml     (widgets/richlistbox.xml)
    content/global/bindings/scale.xml           (widgets/scale.xml)
    content/global/bindings/scrollbar.xml       (widgets/scrollbar.xml)
    content/global/bindings/scrollbox.xml       (widgets/scrollbox.xml)
    content/global/bindings/spinner.js          (widgets/spinner.js)
-   content/global/bindings/splitter.xml        (widgets/splitter.xml)
    content/global/bindings/stringbundle.xml    (widgets/stringbundle.xml)
 *  content/global/bindings/tabbox.xml          (widgets/tabbox.xml)
    content/global/bindings/text.xml            (widgets/text.xml)
 *  content/global/bindings/textbox.xml         (widgets/textbox.xml)
    content/global/bindings/timekeeper.js       (widgets/timekeeper.js)
    content/global/bindings/timepicker.js       (widgets/timepicker.js)
    content/global/bindings/toolbar.xml         (widgets/toolbar.xml)
    content/global/bindings/toolbarbutton.xml   (widgets/toolbarbutton.xml)

deleted file mode 100644
--- a/toolkit/content/widgets/splitter.xml
+++ /dev/null
@@ -1,28 +0,0 @@
-<?xml version="1.0"?>
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-
-
-<bindings id="splitterBindings"
-   xmlns="http://www.mozilla.org/xbl"
-   xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
-
-  <binding id="grippy" extends="xul:button">
-    <handlers>
-      <handler event="command">
-        <![CDATA[
-          var splitter = this.parentNode;
-          if (splitter) {
-            var state = splitter.getAttribute("state");
-            if (state == "collapsed")
-              splitter.setAttribute("state", "open");
-            else
-              splitter.setAttribute("state", "collapsed");
-          }
-        ]]>
-      </handler>
-    </handlers>
-  </binding>
-
-</bindings>

--- a/toolkit/content/xul.css
+++ b/toolkit/content/xul.css
@@ -840,20 +840,16 @@ menulist > menupopup > menuitem {
 }
 
 dropmarker {
   -moz-binding: url("chrome://global/content/bindings/general.xml#dropmarker");
 }
 
 /********** splitter **********/
 
-grippy {
-  -moz-binding: url("chrome://global/content/bindings/splitter.xml#grippy");
-}
-
 .tree-splitter {
   width: 0px;
   max-width: 0px;
   min-width: 0% ! important;
   min-height: 0% ! important;
   -moz-box-ordinal-group: 2147483646;
 }
 

--- a/toolkit/themes/linux/global/splitter.css
+++ b/toolkit/themes/linux/global/splitter.css
@@ -45,21 +45,8 @@ splitter[orient="vertical"][state="colla
 splitter[orient="vertical"][state="collapsed"][collapse="after"],
 splitter[orient="vertical"][state="collapsed"][substate="after"] {
   cursor: n-resize;
 }
 
 splitter[disabled="true"] {
   cursor: default !important;
 }
-
-/* ::::: splitter grippy ::::: */
-
-grippy {
-  cursor: pointer;
-  min-width: 4px;
-  min-height: 115px;
-}
-
-splitter[orient="vertical"] > grippy {
-  min-width: 115px;
-  min-height: 4px;
-}

--- a/toolkit/themes/osx/global/jar.mn
+++ b/toolkit/themes/osx/global/jar.mn
@@ -79,20 +79,16 @@ toolkit.jar:
   skin/classic/global/icons/error-64.png                             (icons/error-64.png)
   skin/classic/global/icons/question-16.png                          (icons/question-16.png)
   skin/classic/global/icons/question-32.png                          (icons/question-32.png)
   skin/classic/global/icons/question-64.png                          (icons/question-64.png)
   skin/classic/global/icons/sslWarning.png                           (icons/sslWarning.png)
 * skin/classic/global/in-content/common.css                          (in-content/common.css)
 * skin/classic/global/in-content/info-pages.css                      (in-content/info-pages.css)
   skin/classic/global/splitter/dimple.png                            (splitter/dimple.png)
-  skin/classic/global/splitter/grip-bottom.gif                       (splitter/grip-bottom.gif)
-  skin/classic/global/splitter/grip-top.gif                          (splitter/grip-top.gif)
-  skin/classic/global/splitter/grip-left.gif                         (splitter/grip-left.gif)
-  skin/classic/global/splitter/grip-right.gif                        (splitter/grip-right.gif)
   skin/classic/global/toolbar/spring.png                             (toolbar/spring.png)
   skin/classic/global/toolbar/toolbar-separator.png                  (toolbar/toolbar-separator.png)
   skin/classic/global/tree/arrow-disclosure.svg                      (tree/arrow-disclosure.svg)
   skin/classic/global/tree/columnpicker.gif                          (tree/columnpicker.gif)
   skin/classic/global/tree/folder.png                                (tree/folder.png)
   skin/classic/global/tree/folder@2x.png                             (tree/folder@2x.png)
 
 #if MOZ_BUILD_APP == browser

--- a/toolkit/themes/osx/global/splitter.css
+++ b/toolkit/themes/osx/global/splitter.css
@@ -7,17 +7,17 @@
 /* ::::: splitter (vertical) ::::: */
 
 splitter {
   -moz-box-align: center;
   -moz-box-pack: center;
   cursor: ew-resize;
   min-width: 9px;
   min-height: 9px;
-  background: url("chrome://global/skin/splitter/dimple.png") transparent no-repeat center;  
+  background: url("chrome://global/skin/splitter/dimple.png") transparent no-repeat center;
 }
 
 splitter[state="collapsed"][collapse="before"],
 splitter[state="collapsed"][substate="before"],
 splitter[state="collapsed"][collapse="after"]:-moz-locale-dir(rtl),
 splitter[state="collapsed"][substate="after"]:-moz-locale-dir(rtl) {
   cursor: e-resize;
 }
@@ -34,91 +34,25 @@ splitter:-moz-lwtheme {
 }
 
 /* ::::: splitter (horizontal) ::::: */
 
 splitter[orient="vertical"] {
   cursor: ns-resize;
   min-width: 0px;
   min-height: 9px;
-  min-width: 9px;  
+  min-width: 9px;
   background: url("chrome://global/skin/splitter/dimple.png") transparent no-repeat center;
 }
 
 splitter[orient="vertical"][state="collapsed"][collapse="before"],
 splitter[orient="vertical"][state="collapsed"][substate="before"] {
   cursor: s-resize;
 }
 
 splitter[orient="vertical"][state="collapsed"][collapse="after"],
 splitter[orient="vertical"][state="collapsed"][substate="after"] {
   cursor: n-resize;
 }
 
 splitter[disabled="true"] {
   cursor: default !important;
 }
-
-/* ::::: splitter grippy ::::: */
-  
-grippy {
-  cursor: pointer;
-  margin: 0px 1px;
-  min-width: 4px;
-  min-height: 115px;
-  background-color: transparent;
-  background-repeat: no-repeat;
-}
-
-grippy:hover {
-  background-color: ThreeDHighlight;
-}
-
-splitter[orient="vertical"] > grippy {
-  margin: 1px 0px;
-  min-width: 115px;
-  min-height: 4px;
-}
-
-/* ..... normal state ..... */
-
-/* vertical grippies */
-splitter[collapse="before"] > grippy,
-splitter[collapse="after"] > grippy:-moz-locale-dir(rtl) {
-  background-image: url("chrome://global/skin/splitter/grip-left.gif");
-}
-
-splitter[collapse="after"] > grippy,
-splitter[collapse="before"] > grippy:-moz-locale-dir(rtl) {
-  background-image: url("chrome://global/skin/splitter/grip-right.gif");
-}
-
-/* horizontal grippies */
-splitter[collapse="before"][orient="vertical"] > grippy {
-  background-image: url("chrome://global/skin/splitter/grip-top.gif");
-}
-
-splitter[collapse="after"][orient="vertical"] > grippy {
-  background-image: url("chrome://global/skin/splitter/grip-bottom.gif");
-}
-
-/* ..... collapsed state ..... */
-
-/* vertical grippies */
-splitter[collapse="before"][state="collapsed"] > grippy,
-splitter[collapse="after"][state="collapsed"] > grippy:-moz-locale-dir(rtl) {
-  background-image: url("chrome://global/skin/splitter/grip-right.gif");
-}
-
-splitter[collapse="after"][state="collapsed"] > grippy,
-splitter[collapse="before"][state="collapsed"] > grippy:-moz-locale-dir(rtl) {
-  background-image: url("chrome://global/skin/splitter/grip-left.gif");
-}
-
-/* horizontal grippies */
-splitter[collapse="before"][state="collapsed"][orient="vertical"] > grippy {
-  background-image: url("chrome://global/skin/splitter/grip-bottom.gif");
-}
-
-splitter[collapse="after"][state="collapsed"][orient="vertical"] > grippy {
-  background-image: url("chrome://global/skin/splitter/grip-top.gif");
-}
-

deleted file mode 100644
index af6290fe9deacdcdab045c2d7c81df5c22d6bc92..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

deleted file mode 100644
index 6be9bc4f400a8649794f0e26a10d898af3dd3698..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

deleted file mode 100644
index 71be69083efaa15f2b57c2a3a73929bec0353d48..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

deleted file mode 100644
index 3cba0059461c6d52d41fda25610aecba188fa35b..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

--- a/toolkit/themes/shared/non-mac.jar.inc.mn
+++ b/toolkit/themes/shared/non-mac.jar.inc.mn
@@ -28,20 +28,16 @@
   skin/classic/global/icons/error-16.png                   (../../windows/global/icons/error-16.png)
   skin/classic/global/icons/question-16.png                (../../windows/global/icons/question-16.png)
   skin/classic/global/icons/question-64.png                (../../windows/global/icons/question-64.png)
   skin/classic/global/icons/resizer-rtl.png                (../../windows/global/icons/resizer-rtl.png)
   skin/classic/global/icons/search-textbox.svg             (../../windows/global/icons/search-textbox.svg)
   skin/classic/global/icons/tabprompts-bgtexture.png       (../../windows/global/icons/tabprompts-bgtexture.png)
   skin/classic/global/icons/warning-16.png                 (../../windows/global/icons/warning-16.png)
   skin/classic/global/icons/warning-64.png                 (../../windows/global/icons/warning-64.png)
-  skin/classic/global/splitter/grip-bottom.gif             (../../windows/global/splitter/grip-bottom.gif)
-  skin/classic/global/splitter/grip-top.gif                (../../windows/global/splitter/grip-top.gif)
-  skin/classic/global/splitter/grip-left.gif               (../../windows/global/splitter/grip-left.gif)
-  skin/classic/global/splitter/grip-right.gif              (../../windows/global/splitter/grip-right.gif)
   skin/classic/global/tree/columnpicker.gif                (../../windows/global/tree/columnpicker.gif)
   skin/classic/global/tree/sort-asc.png                    (../../windows/global/tree/sort-asc.png)
   skin/classic/global/tree/sort-dsc.png                    (../../windows/global/tree/sort-dsc.png)
   skin/classic/global/tree/sort-asc-classic.png            (../../windows/global/tree/sort-asc-classic.png)
   skin/classic/global/tree/sort-dsc-classic.png            (../../windows/global/tree/sort-dsc-classic.png)
 
   skin/classic/mozapps/downloads/downloadButtons.png         (../../windows/mozapps/downloads/downloadButtons.png)
   skin/classic/mozapps/downloads/unknownContentType.css      (../../windows/mozapps/downloads/unknownContentType.css)

--- a/toolkit/themes/windows/global/splitter.css
+++ b/toolkit/themes/windows/global/splitter.css
@@ -58,78 +58,8 @@ splitter[orient="vertical"][state="colla
 splitter[orient="vertical"][state="collapsed"][collapse="after"],
 splitter[orient="vertical"][state="collapsed"][substate="after"] {
   cursor: n-resize;
 }
 
 splitter[disabled="true"] {
   cursor: default !important;
 }
-
-/* ::::: splitter grippy ::::: */
-
-grippy {
-  cursor: pointer;
-  border-top: 1px solid ThreeDShadow;
-  border-bottom: 1px solid ThreeDShadow;
-  min-width: 4px;
-  min-height: 115px;
-  background-color: transparent;
-  background-repeat: no-repeat;
-}
-
-grippy:hover {
-  background-color: ThreeDHighlight;
-}
-
-splitter[orient="vertical"] > grippy {
-  border-top: none;
-  border-right: 1px solid ThreeDShadow;
-  border-bottom: none;
-  border-left: 1px solid ThreeDShadow;;
-  min-width: 115px;
-  min-height: 4px;
-}
-
-/* ..... normal state ..... */
-
-/* vertical grippies */
-splitter[collapse="before"] > grippy,
-splitter[collapse="after"] > grippy:-moz-locale-dir(rtl) {
-  background-image: url("chrome://global/skin/splitter/grip-left.gif");
-}
-
-splitter[collapse="after"] > grippy,
-splitter[collapse="before"] > grippy:-moz-locale-dir(rtl) {
-  background-image: url("chrome://global/skin/splitter/grip-right.gif");
-}
-
-/* horizontal grippies */
-splitter[collapse="before"][orient="vertical"] > grippy {
-  background-image: url("chrome://global/skin/splitter/grip-top.gif");
-}
-
-splitter[collapse="after"][orient="vertical"] > grippy {
-  background-image: url("chrome://global/skin/splitter/grip-bottom.gif");
-}
-
-/* ..... collapsed state ..... */
-
-/* vertical grippies */
-splitter[collapse="before"][state="collapsed"] > grippy,
-splitter[collapse="after"][state="collapsed"] > grippy:-moz-locale-dir(rtl) {
-  background-image: url("chrome://global/skin/splitter/grip-right.gif");
-}
-
-splitter[collapse="after"][state="collapsed"] > grippy,
-splitter[collapse="before"][state="collapsed"] > grippy:-moz-locale-dir(rtl) {
-  background-image: url("chrome://global/skin/splitter/grip-left.gif");
-}
-
-/* horizontal grippies */
-splitter[collapse="before"][state="collapsed"][orient="vertical"] > grippy {
-  background-image: url("chrome://global/skin/splitter/grip-bottom.gif");
-}
-
-splitter[collapse="after"][state="collapsed"][orient="vertical"] > grippy {
-  background-image: url("chrome://global/skin/splitter/grip-top.gif");
-}
-

deleted file mode 100644
index af6290fe9deacdcdab045c2d7c81df5c22d6bc92..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

deleted file mode 100644
index 6be9bc4f400a8649794f0e26a10d898af3dd3698..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

deleted file mode 100644
index 71be69083efaa15f2b57c2a3a73929bec0353d48..0000000000000000000000000000000000000000
GIT binary patch
literal 0
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deleted file mode 100644
index 3cba0059461c6d52d41fda25610aecba188fa35b..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

--- a/xpcom/ds/nsGkAtomList.h
+++ b/xpcom/ds/nsGkAtomList.h
@@ -501,17 +501,16 @@ GK_ATOM(freshProcess, "freshProcess")
 GK_ATOM(generateId, "generate-id")
 GK_ATOM(getter, "getter")
 GK_ATOM(glyphchar, "glyphchar")
 GK_ATOM(glyphid, "glyphid")
 GK_ATOM(graphicsDocument, "graphics-document")
 GK_ATOM(graphicsObject, "graphics-object")
 GK_ATOM(graphicsSymbol, "graphics-symbol")
 GK_ATOM(grid, "grid")
-GK_ATOM(grippy, "grippy")
 GK_ATOM(group, "group")
 GK_ATOM(groupbox, "groupbox")
 GK_ATOM(groupingSeparator, "grouping-separator")
 GK_ATOM(groupingSize, "grouping-size")
 GK_ATOM(grow, "grow")
 GK_ATOM(gutter, "gutter")
 GK_ATOM(h1, "h1")
 GK_ATOM(h2, "h2")