[Editing] Store |CommandSource| in |CompositeEditCommand|

third_party/WebKit/Source/core/editing/commands/SplitTextNodeContainingElementCommand.cpp

 /*
  * Copyright (C) 2005, 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 16 matching lines @@
 
 #include "core/dom/Element.h"
 #include "core/dom/Text.h"
 #include "core/editing/EditingUtilities.h"
 #include "core/layout/LayoutObject.h"
 #include "wtf/Assertions.h"
 
 namespace blink {
 
 SplitTextNodeContainingElementCommand::SplitTextNodeContainingElementCommand(
+    CommandSource source,
     Text* text,
     int offset)
-    : CompositeEditCommand(text->document()), m_text(text), m_offset(offset) {
+    : CompositeEditCommand(text->document(), source),
+      m_text(text),
+      m_offset(offset) {
   DCHECK(m_text);
   DCHECK_GT(m_text->length(), 0u);
 }
 
 void SplitTextNodeContainingElementCommand::doApply(EditingState*) {
   DCHECK(m_text);
   DCHECK_GT(m_offset, 0);
 
   splitTextNode(m_text.get(), m_offset);
 
@@ skipping 13 matching lines @@
 
   splitElement(parent, m_text.get());
 }
 
 DEFINE_TRACE(SplitTextNodeContainingElementCommand) {
   visitor->trace(m_text);
   CompositeEditCommand::trace(visitor);
 }
 
 }  // namespace blink