Implement frame attribution (FrameBlamer)

third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp

 /*
  * Copyright (C) 2009, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2011 Apple 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.
@@ skipping 1011 matching lines @@
 }
 
 void FrameLoaderClientImpl::suddenTerminationDisablerChanged(bool present, SuddenTerminationDisablerType type)
 {
     if (m_webFrame->client()) {
         m_webFrame->client()->suddenTerminationDisablerChanged(
             present, static_cast<WebFrameClient::SuddenTerminationDisablerType>(type));
     }
 }
 
+BlameContext* FrameLoaderClientImpl::frameBlameContext()
+{
+    if (!m_webFrame->client())
+        return nullptr;
+    return m_webFrame->client()->frameBlameContext();
+}
+
 } // namespace blink