Introduce InsertIncrementalTextCommand to respect existing style for composition

third_party/WebKit/Source/core/events/TextEvent.h

 /*
  * Copyright (C) 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 51 matching lines @@
   String data() const { return m_data; }
 
   const AtomicString& interfaceName() const override;
 
   bool isLineBreak() const { return m_inputType == TextEventInputLineBreak; }
   bool isComposition() const {
     return m_inputType == TextEventInputComposition;
   }
   bool isPaste() const { return m_inputType == TextEventInputPaste; }
   bool isDrop() const { return m_inputType == TextEventInputDrop; }
+  bool isIncrementalInsertion() const {
+    return m_inputType == TextEventInputIncrementalInsertion;
+  }
 
   bool shouldSmartReplace() const { return m_shouldSmartReplace; }
   bool shouldMatchStyle() const { return m_shouldMatchStyle; }
   DocumentFragment* pastingFragment() const { return m_pastingFragment.get(); }
 
   DECLARE_VIRTUAL_TRACE();
 
  private:
   TextEvent();
 
@@ skipping 21 matching lines @@
 
 DEFINE_TYPE_CASTS(TextEvent,
                   Event,
                   event,
                   isTextEvent(*event),
                   isTextEvent(event));
 
 }  // namespace blink
 
 #endif  // TextEvent_h