[Editing] Store |CommandSource| in |CompositeEditCommand|

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

 /*
  * Copyright (C) 2012 Apple Computer, 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/NodeComputedStyle.h"
 #include "core/dom/NodeTraversal.h"
 #include "core/layout/LayoutInline.h"
 #include "core/layout/LayoutObject.h"
 #include "core/style/ComputedStyle.h"
 
 namespace blink {
 
 SimplifyMarkupCommand::SimplifyMarkupCommand(Document& document,
+                                             CommandSource source,
                                              Node* firstNode,
                                              Node* nodeAfterLast)
-    : CompositeEditCommand(document),
+    : CompositeEditCommand(document, source),
       m_firstNode(firstNode),
       m_nodeAfterLast(nodeAfterLast) {}
 
 void SimplifyMarkupCommand::doApply(EditingState* editingState) {
   ContainerNode* rootNode = m_firstNode->parentNode();
   HeapVector<Member<ContainerNode>> nodesToRemove;
 
   // Walk through the inserted nodes, to see if there are elements that could be
   // removed without affecting the style. The goal is to produce leaner markup
   // even when starting from a verbose fragment.
@@ skipping 101 matching lines @@
   return pastLastNodeToRemove - startNodeIndex - 1;
 }
 
 DEFINE_TRACE(SimplifyMarkupCommand) {
   visitor->trace(m_firstNode);
   visitor->trace(m_nodeAfterLast);
   CompositeEditCommand::trace(visitor);
 }
 
 }  // namespace blink