Use VisibleSelection::InDOMTree::equalSelections() instead of operator==()

Source/core/editing/TextInsertionBaseCommand.cpp

 /*
  * Copyright (C) 2012 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 24 matching lines @@
 
 namespace blink {
 
 TextInsertionBaseCommand::TextInsertionBaseCommand(Document& document)
     : CompositeEditCommand(document)
 {
 }
 
 void TextInsertionBaseCommand::applyTextInsertionCommand(LocalFrame* frame, PassRefPtrWillBeRawPtr<TextInsertionBaseCommand> command, const VisibleSelection& selectionForInsertion, const VisibleSelection& endingSelection)
 {
-    bool changeSelection = selectionForInsertion != endingSelection;
+    bool changeSelection = !VisibleSelection::InDOMTree::equalSelections(selectionForInsertion, endingSelection);
     if (changeSelection) {
         command->setStartingSelection(selectionForInsertion);
         command->setEndingSelection(selectionForInsertion);
     }
     command->apply();
     if (changeSelection) {
         command->setEndingSelection(endingSelection);
         frame->selection().setSelection(endingSelection);
     }
 }
@@ skipping 20 matching lines @@
     Element* element = selection.rootEditableElement();
     if (!element)
         return false;
 
     RefPtrWillBeRawPtr<BeforeTextInsertedEvent> event = BeforeTextInsertedEvent::create(String("\n"));
     element->dispatchEvent(event, IGNORE_EXCEPTION);
     return event->text().length();
 }
 
 }