Add deprecation message for -webkit-background-composite

third_party/WebKit/Source/core/frame/FrameHost.cpp

 /*
  * Copyright (C) 2013 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 58 matching lines @@
 ChromeClient& FrameHost::chromeClient() const
 {
     return m_page->chromeClient();
 }
 
 UseCounter& FrameHost::useCounter() const
 {
     return m_page->useCounter();
 }
 
+Deprecation& FrameHost::deprecation() const
+{
+    return m_page->deprecation();
+}
+
 float FrameHost::deviceScaleFactor() const
 {
     return m_page->deviceScaleFactor();
 }
 
 TopControls& FrameHost::topControls() const
 {
     return *m_topControls;
 }
 
@@ skipping 83 matching lines @@
 
     FrameView* rootView = page().deprecatedLocalMainFrame()->view();
 
     if (!rootView)
         return;
 
     rootView->setNeedsLayout();
 }
 
 } // namespace blink