[EditCommandSource] Pass source through |CompositeEditCommand| ctor instead of |apply(source)|

third_party/WebKit/Source/core/editing/commands/DeleteSelectionCommand.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 48 matching lines @@
   row->document().updateStyleAndLayoutIgnorePendingStylesheets();
   for (Node* child = row->firstChild(); child; child = child->nextSibling()) {
     if (isTableCell(child) && !isTableCellEmpty(child))
       return false;
   }
   return true;
 }
 
 DeleteSelectionCommand::DeleteSelectionCommand(
     Document& document,
+    EditCommandSource source,
     bool smartDelete,
     bool mergeBlocksAfterDelete,
     bool expandForSpecialElements,
     bool sanitizeMarkup,
     InputEvent::InputType inputType,
     const Position& referenceMovePosition)
-    : CompositeEditCommand(document),
+    : CompositeEditCommand(document, source),
       m_hasSelectionToDelete(false),
       m_smartDelete(smartDelete),
       m_mergeBlocksAfterDelete(mergeBlocksAfterDelete),
       m_needPlaceholder(false),
       m_expandForSpecialElements(expandForSpecialElements),
       m_pruneStartBlockIfNecessary(false),
       m_startsAtEmptyLine(false),
       m_sanitizeMarkup(sanitizeMarkup),
       m_inputType(inputType),
       m_referenceMovePosition(referenceMovePosition),
@@ skipping 1141 matching lines @@
   visitor->trace(m_deleteIntoBlockquoteStyle);
   visitor->trace(m_startRoot);
   visitor->trace(m_endRoot);
   visitor->trace(m_startTableRow);
   visitor->trace(m_endTableRow);
   visitor->trace(m_temporaryPlaceholder);
   CompositeEditCommand::trace(visitor);
 }
 
 }  // namespace blink