[Editing] Store |CommandSource| in |CompositeEditCommand|

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

 /*
  * Copyright (C) 2005, 2006, 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 15 matching lines @@
 #ifndef SplitTextNodeContainingElementCommand_h
 #define SplitTextNodeContainingElementCommand_h
 
 #include "core/editing/commands/CompositeEditCommand.h"
 
 namespace blink {
 
 class SplitTextNodeContainingElementCommand final
     : public CompositeEditCommand {
  public:
-  static SplitTextNodeContainingElementCommand* create(Text* node, int offset) {
-    return new SplitTextNodeContainingElementCommand(node, offset);
+  static SplitTextNodeContainingElementCommand* create(CommandSource source,
+                                                       Text* node,
+                                                       int offset) {
+    return new SplitTextNodeContainingElementCommand(source, node, offset);
   }
 
   DECLARE_VIRTUAL_TRACE();
 
  private:
-  SplitTextNodeContainingElementCommand(Text*, int offset);
+  SplitTextNodeContainingElementCommand(CommandSource, Text*, int offset);
 
   void doApply(EditingState*) override;
 
   Member<Text> m_text;
   int m_offset;
 };
 
 }  // namespace blink
 
 #endif  // SplitTextNodeContainingElementCommand_h