[Editing] Store |CommandSource| in |CompositeEditCommand|

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

 /*
  * Copyright (C) 2005 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 53 matching lines @@
           node))
     return false;
 
   VisiblePosition next = nextPositionOf(visiblePosition);
   return next.isNull() ||
          !next.deepEquivalent().anchorNode()->isDescendantOf(node);
 }
 
 }  // namespace
 
-BreakBlockquoteCommand::BreakBlockquoteCommand(Document& document)
-    : CompositeEditCommand(document) {}
+BreakBlockquoteCommand::BreakBlockquoteCommand(Document& document,
+                                               CommandSource source)
+    : CompositeEditCommand(document, source) {}
 
 void BreakBlockquoteCommand::doApply(EditingState* editingState) {
   if (endingSelection().isNone())
     return;
 
   // Delete the current selection.
   if (endingSelection().isRange()) {
     deleteSelection(editingState, false, false);
     if (editingState->isAborted())
       return;
@@ skipping 182 matching lines @@
 
   // Put the selection right before the break.
   setEndingSelection(SelectionInDOMTree::Builder()
                          .collapse(Position::beforeNode(breakElement))
                          .setIsDirectional(endingSelection().isDirectional())
                          .build());
   rebalanceWhitespace();
 }
 
 }  // namespace blink