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

Source/core/editing/TypingCommand.cpp

 /*
  * Copyright (C) 2005, 2006, 2007, 2008 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 130 matching lines @@
         }
     }
 
     TypingCommand::create(document, ForwardDeleteKey, "", options, granularity)->apply();
 }
 
 void TypingCommand::updateSelectionIfDifferentFromCurrentSelection(TypingCommand* typingCommand, LocalFrame* frame)
 {
     ASSERT(frame);
     VisibleSelection currentSelection = frame->selection().selection();
-    if (currentSelection == typingCommand->endingSelection())
+    if (VisibleSelection::InDOMTree::equalSelections(currentSelection, typingCommand->endingSelection()))
         return;
 
     typingCommand->setStartingSelection(currentSelection);
     typingCommand->setEndingSelection(currentSelection);
 }
 
 void TypingCommand::insertText(Document& document, const String& text, Options options, TextCompositionType composition)
 {
     LocalFrame* frame = document.frame();
     ASSERT(frame);
@@ skipping 11 matching lines @@
     ASSERT(frame);
 
     VisibleSelection currentSelection = frame->selection().selection();
 
     String newText = dispatchBeforeTextInsertedEvent(text, selectionForInsertion, compositionType == TextCompositionUpdate);
 
     // Set the starting and ending selection appropriately if we are using a selection
     // that is different from the current selection.  In the future, we should change EditCommand
     // to deal with custom selections in a general way that can be used by all of the commands.
     if (RefPtrWillBeRawPtr<TypingCommand> lastTypingCommand = lastTypingCommandIfStillOpenForTyping(frame.get())) {
-        if (lastTypingCommand->endingSelection() != selectionForInsertion) {
+        if (!VisibleSelection::InDOMTree::equalSelections(lastTypingCommand->endingSelection(), selectionForInsertion)) {
             lastTypingCommand->setStartingSelection(selectionForInsertion);
             lastTypingCommand->setEndingSelection(selectionForInsertion);
         }
 
         lastTypingCommand->setCompositionType(compositionType);
         lastTypingCommand->setShouldRetainAutocorrectionIndicator(options & RetainAutocorrectionIndicator);
         lastTypingCommand->setShouldPreventSpellChecking(options & PreventSpellChecking);
         lastTypingCommand->insertText(newText, options & SelectInsertedText);
         return;
     }
@@ skipping 430 matching lines @@
     ASSERT_NOT_REACHED();
     m_preservesTypingStyle = false;
 }
 
 bool TypingCommand::isTypingCommand() const
 {
     return true;
 }
 
 } // namespace blink