rename from editor/libeditor/DeleteRangeTxn.cpp
rename to editor/libeditor/DeleteRangeTransaction.cpp
--- a/editor/libeditor/DeleteRangeTxn.cpp
+++ b/editor/libeditor/DeleteRangeTransaction.cpp
@@ -1,52 +1,51 @@
 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* 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/. */
 
-#include "DeleteRangeTxn.h"
+#include "DeleteRangeTransaction.h"
 
 #include "DeleteNodeTransaction.h"
 #include "DeleteTextTxn.h"
 #include "mozilla/Assertions.h"
 #include "mozilla/dom/Selection.h"
 #include "mozilla/mozalloc.h"
 #include "nsCOMPtr.h"
 #include "nsDebug.h"
 #include "nsEditor.h"
 #include "nsError.h"
 #include "nsIContent.h"
 #include "nsIContentIterator.h"
 #include "nsIDOMCharacterData.h"
 #include "nsINode.h"
 #include "nsAString.h"
 
-using namespace mozilla;
-using namespace mozilla::dom;
+namespace mozilla {
+
+using namespace dom;
 
 // note that aEditor is not refcounted
-DeleteRangeTxn::DeleteRangeTxn()
-  : EditAggregateTxn(),
-    mRange(),
-    mEditor(nullptr),
-    mRangeUpdater(nullptr)
+DeleteRangeTransaction::DeleteRangeTransaction()
+  : mEditor(nullptr)
+  , mRangeUpdater(nullptr)
 {
 }
 
-NS_IMPL_CYCLE_COLLECTION_INHERITED(DeleteRangeTxn, EditAggregateTxn,
+NS_IMPL_CYCLE_COLLECTION_INHERITED(DeleteRangeTransaction, EditAggregateTxn,
                                    mRange)
 
-NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DeleteRangeTxn)
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DeleteRangeTransaction)
 NS_INTERFACE_MAP_END_INHERITING(EditAggregateTxn)
 
 nsresult
-DeleteRangeTxn::Init(nsEditor* aEditor,
-                     nsRange* aRange,
-                     nsRangeUpdater* aRangeUpdater)
+DeleteRangeTransaction::Init(nsEditor* aEditor,
+                             nsRange* aRange,
+                             nsRangeUpdater* aRangeUpdater)
 {
   MOZ_ASSERT(aEditor && aRange);
 
   mEditor = aEditor;
   mRange = aRange->CloneRange();
   mRangeUpdater = aRangeUpdater;
 
   NS_ENSURE_TRUE(mEditor->IsModifiableNode(mRange->GetStartParent()),
@@ -55,17 +54,17 @@ DeleteRangeTxn::Init(nsEditor* aEditor,
                  NS_ERROR_FAILURE);
   NS_ENSURE_TRUE(mEditor->IsModifiableNode(mRange->GetCommonAncestor()),
                  NS_ERROR_FAILURE);
 
   return NS_OK;
 }
 
 NS_IMETHODIMP
-DeleteRangeTxn::DoTransaction()
+DeleteRangeTransaction::DoTransaction()
 {
   MOZ_ASSERT(mRange && mEditor);
   nsresult res;
 
   // build the child transactions
   nsCOMPtr<nsINode> startParent = mRange->GetStartParent();
   int32_t startOffset = mRange->StartOffset();
   nsCOMPtr<nsINode> endParent = mRange->GetEndParent();
@@ -103,42 +102,42 @@ DeleteRangeTxn::DoTransaction()
     NS_ENSURE_SUCCESS(res, res);
   }
   // else do nothing - dom range gravity will adjust selection
 
   return NS_OK;
 }
 
 NS_IMETHODIMP
-DeleteRangeTxn::UndoTransaction()
+DeleteRangeTransaction::UndoTransaction()
 {
   MOZ_ASSERT(mRange && mEditor);
 
   return EditAggregateTxn::UndoTransaction();
 }
 
 NS_IMETHODIMP
-DeleteRangeTxn::RedoTransaction()
+DeleteRangeTransaction::RedoTransaction()
 {
   MOZ_ASSERT(mRange && mEditor);
 
   return EditAggregateTxn::RedoTransaction();
 }
 
 NS_IMETHODIMP
-DeleteRangeTxn::GetTxnDescription(nsAString& aString)
+DeleteRangeTransaction::GetTxnDescription(nsAString& aString)
 {
-  aString.AssignLiteral("DeleteRangeTxn");
+  aString.AssignLiteral("DeleteRangeTransaction");
   return NS_OK;
 }
 
 nsresult
-DeleteRangeTxn::CreateTxnsToDeleteBetween(nsINode* aNode,
-                                          int32_t aStartOffset,
-                                          int32_t aEndOffset)
+DeleteRangeTransaction::CreateTxnsToDeleteBetween(nsINode* aNode,
+                                                  int32_t aStartOffset,
+                                                  int32_t aEndOffset)
 {
   // see what kind of node we have
   if (aNode->IsNodeOfType(nsINode::eDATA_NODE)) {
     // if the node is a chardata node, then delete chardata content
     int32_t numToDel;
     if (aStartOffset == aEndOffset) {
       numToDel = 1;
     } else {
@@ -173,19 +172,19 @@ DeleteRangeTxn::CreateTxnsToDeleteBetwee
     child = child->GetNextSibling();
   }
 
   NS_ENSURE_SUCCESS(res, res);
   return NS_OK;
 }
 
 nsresult
-DeleteRangeTxn::CreateTxnsToDeleteContent(nsINode* aNode,
-                                          int32_t aOffset,
-                                          nsIEditor::EDirection aAction)
+DeleteRangeTransaction::CreateTxnsToDeleteContent(nsINode* aNode,
+                                                  int32_t aOffset,
+                                                  nsIEditor::EDirection aAction)
 {
   // see what kind of node we have
   if (aNode->IsNodeOfType(nsINode::eDATA_NODE)) {
     // if the node is a chardata node, then delete chardata content
     uint32_t start, numToDelete;
     if (nsIEditor::eNext == aAction) {
       start = aOffset;
       numToDelete = aNode->Length() - aOffset;
@@ -206,17 +205,17 @@ DeleteRangeTxn::CreateTxnsToDeleteConten
       AppendChild(txn);
     }
   }
 
   return NS_OK;
 }
 
 nsresult
-DeleteRangeTxn::CreateTxnsToDeleteNodesBetween()
+DeleteRangeTransaction::CreateTxnsToDeleteNodesBetween()
 {
   nsCOMPtr<nsIContentIterator> iter = NS_NewContentSubtreeIterator();
 
   nsresult res = iter->Init(mRange);
   NS_ENSURE_SUCCESS(res, res);
 
   while (!iter->IsDone()) {
     nsCOMPtr<nsINode> node = iter->GetCurrentNode();
@@ -226,8 +225,10 @@ DeleteRangeTxn::CreateTxnsToDeleteNodesB
     res = transaction->Init(mEditor, node, mRangeUpdater);
     NS_ENSURE_SUCCESS(res, res);
     AppendChild(transaction);
 
     iter->Next();
   }
   return NS_OK;
 }
+
+} // namespace mozilla

rename from editor/libeditor/DeleteRangeTxn.h
rename to editor/libeditor/DeleteRangeTransaction.h
--- a/editor/libeditor/DeleteRangeTxn.h
+++ b/editor/libeditor/DeleteRangeTransaction.h
@@ -1,74 +1,78 @@
 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* 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/. */
 
-#ifndef DeleteRangeTxn_h__
-#define DeleteRangeTxn_h__
+#ifndef DeleteRangeTransaction_h
+#define DeleteRangeTransaction_h
 
 #include "EditAggregateTxn.h"
 #include "EditTxn.h"
 #include "nsCycleCollectionParticipant.h"
 #include "nsID.h"
 #include "nsIEditor.h"
 #include "nsISupportsImpl.h"
 #include "nsRange.h"
 #include "nscore.h"
 
 class nsEditor;
 class nsINode;
 class nsRangeUpdater;
 
+namespace mozilla {
+
 /**
  * A transaction that deletes an entire range in the content tree
  */
-class DeleteRangeTxn : public EditAggregateTxn
+class DeleteRangeTransaction final : public EditAggregateTxn
 {
 public:
-  /** initialize the transaction.
-    * @param aEditor the object providing basic editing operations
-    * @param aRange  the range to delete
-    */
+  /**
+   * Initialize the transaction.
+   * @param aEditor     The object providing basic editing operations.
+   * @param aRange      The range to delete.
+   */
   nsresult Init(nsEditor* aEditor,
                 nsRange* aRange,
                 nsRangeUpdater* aRangeUpdater);
 
-  DeleteRangeTxn();
+  DeleteRangeTransaction();
 
-  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(DeleteRangeTxn, EditAggregateTxn)
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(DeleteRangeTransaction,
+                                           EditAggregateTxn)
   NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr) override;
 
   NS_DECL_EDITTXN
 
   NS_IMETHOD RedoTransaction() override;
 
   virtual void LastRelease() override
   {
     mRange = nullptr;
     EditAggregateTxn::LastRelease();
   }
+
 protected:
-
   nsresult CreateTxnsToDeleteBetween(nsINode* aNode,
                                      int32_t aStartOffset,
                                      int32_t aEndOffset);
 
   nsresult CreateTxnsToDeleteNodesBetween();
 
   nsresult CreateTxnsToDeleteContent(nsINode* aParent,
                                      int32_t aOffset,
                                      nsIEditor::EDirection aAction);
 
-protected:
-
-  /** p1 in the range */
+  // P1 in the range.
   RefPtr<nsRange> mRange;
 
-  /** the editor for this transaction */
+  // The editor for this transaction.
   nsEditor* mEditor;
 
-  /** range updater object */
+  // Range updater object.
   nsRangeUpdater* mRangeUpdater;
 };
 
-#endif
+} // namespace mozilla
+
+#endif // #ifndef DeleteRangeTransaction_h

--- a/editor/libeditor/moz.build
+++ b/editor/libeditor/moz.build
@@ -13,17 +13,17 @@ MOCHITEST_CHROME_MANIFESTS += ['tests/ch
 
 BROWSER_CHROME_MANIFESTS += ['tests/browser.ini']
 
 UNIFIED_SOURCES += [
     'ChangeAttributeTransaction.cpp',
     'ChangeStyleTransaction.cpp',
     'CreateElementTransaction.cpp',
     'DeleteNodeTransaction.cpp',
-    'DeleteRangeTxn.cpp',
+    'DeleteRangeTransaction.cpp',
     'DeleteTextTxn.cpp',
     'EditAggregateTxn.cpp',
     'EditorUtils.cpp',
     'EditTxn.cpp',
     'HTMLEditUtils.cpp',
     'IMETextTxn.cpp',
     'InsertNodeTxn.cpp',
     'InsertTextTxn.cpp',

--- a/editor/libeditor/nsEditor.cpp
+++ b/editor/libeditor/nsEditor.cpp
@@ -8,17 +8,17 @@
 #include "mozilla/DebugOnly.h"          // for DebugOnly
 
 #include <stdio.h>                      // for nullptr, stdout
 #include <string.h>                     // for strcmp
 
 #include "ChangeAttributeTransaction.h" // for ChangeAttributeTransaction
 #include "CreateElementTransaction.h"   // for CreateElementTransaction
 #include "DeleteNodeTransaction.h"      // for DeleteNodeTransaction
-#include "DeleteRangeTxn.h"             // for DeleteRangeTxn
+#include "DeleteRangeTransaction.h"     // for DeleteRangeTransaction
 #include "DeleteTextTxn.h"              // for DeleteTextTxn
 #include "EditAggregateTxn.h"           // for EditAggregateTxn
 #include "EditorUtils.h"                // for AutoRules, etc
 #include "EditTxn.h"                    // for EditTxn
 #include "IMETextTxn.h"                 // for IMETextTxn
 #include "InsertNodeTxn.h"              // for InsertNodeTxn
 #include "InsertTextTxn.h"              // for InsertTextTxn
 #include "JoinNodeTxn.h"                // for JoinNodeTxn
@@ -4297,19 +4297,19 @@ nsEditor::CreateTxnForDeleteSelection(ED
 
   for (uint32_t rangeIdx = 0; rangeIdx < selection->RangeCount(); ++rangeIdx) {
     RefPtr<nsRange> range = selection->GetRangeAt(rangeIdx);
     NS_ENSURE_STATE(range);
 
     // Same with range as with selection; if it is collapsed and action
     // is eNone, do nothing.
     if (!range->Collapsed()) {
-      RefPtr<DeleteRangeTxn> txn = new DeleteRangeTxn();
-      txn->Init(this, range, &mRangeUpdater);
-      aggTxn->AppendChild(txn);
+      RefPtr<DeleteRangeTransaction> transaction = new DeleteRangeTransaction();
+      transaction->Init(this, range, &mRangeUpdater);
+      aggTxn->AppendChild(transaction);
     } else if (aAction != eNone) {
       // we have an insertion point.  delete the thing in front of it or
       // behind it, depending on aAction
       nsresult res = CreateTxnForDeleteInsertionPoint(range, aAction, aggTxn,
                                                       aNode, aOffset, aLength);
       NS_ENSURE_SUCCESS(res, res);
     }
   }