[Editing] Store |CommandSource| in |CompositeEditCommand|

third_party/WebKit/Source/core/editing/commands/RemoveNodePreservingChildrenCommand.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 14 matching lines @@
 
 #include "core/editing/commands/RemoveNodePreservingChildrenCommand.h"
 
 #include "core/dom/Node.h"
 #include "core/editing/EditingUtilities.h"
 #include "wtf/Assertions.h"
 
 namespace blink {
 
 RemoveNodePreservingChildrenCommand::RemoveNodePreservingChildrenCommand(
+    CommandSource source,
     Node* node,
     ShouldAssumeContentIsAlwaysEditable shouldAssumeContentIsAlwaysEditable)
-    : CompositeEditCommand(node->document()),
+    : CompositeEditCommand(node->document(), source),
       m_node(node),
       m_shouldAssumeContentIsAlwaysEditable(
           shouldAssumeContentIsAlwaysEditable) {
   DCHECK(m_node);
 }
 
 void RemoveNodePreservingChildrenCommand::doApply(EditingState* editingState) {
   ABORT_EDITING_COMMAND_IF(!m_node->parentNode());
   ABORT_EDITING_COMMAND_IF(!hasEditableStyle(*m_node->parentNode()));
   if (m_node->isContainerNode()) {
@@ skipping 13 matching lines @@
   }
   removeNode(m_node, editingState, m_shouldAssumeContentIsAlwaysEditable);
 }
 
 DEFINE_TRACE(RemoveNodePreservingChildrenCommand) {
   visitor->trace(m_node);
   CompositeEditCommand::trace(visitor);
 }
 
 }  // namespace blink