Replaced PassRefPtr copies with moves in Source/core.

third_party/WebKit/Source/core/clipboard/DataObject.cpp

 /*
  * Copyright (c) 2008, 2009, 2012 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 203 matching lines @@
     return results;
 }
 
 void DataObject::addFilename(const String& filename, const String& displayName)
 {
     internalAddFileItem(DataObjectItem::createFromFile(File::createForUserProvidedFile(filename, displayName)));
 }
 
 void DataObject::addSharedBuffer(const String& name, PassRefPtr<SharedBuffer> buffer)
 {
-    internalAddFileItem(DataObjectItem::createFromSharedBuffer(name, buffer));
+    internalAddFileItem(DataObjectItem::createFromSharedBuffer(name, std::move(buffer)));
 }
 
 DataObject::DataObject()
     : m_modifiers(0)
 {
 }
 
 DataObjectItem* DataObject::findStringItem(const String& type) const
 {
     for (size_t i = 0; i < m_itemList.size(); ++i) {
@@ skipping 113 matching lines @@
         }
         item.title = originalItem->title();
         item.baseURL = originalItem->baseURL();
         itemList[i] = item;
     }
     data.swapItems(itemList);
     return data;
 }
 
 } // namespace blink