Move handling of DraggableRegionsChanged notification from "view" to "frame".

third_party/WebKit/Source/core/frame/LocalFrameClient.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights
  * reserved.
  * Copyright (C) 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
@@ skipping 329 matching lines @@
 
   virtual void SetHasReceivedUserGesture(bool received_previously) {}
 
   virtual void SetDevToolsFrameId(const String& devtools_frame_id) {}
 
   virtual void AbortClientNavigation() {}
 
   virtual TextCheckerClient& GetTextCheckerClient() const = 0;
 
   virtual std::unique_ptr<WebURLLoader> CreateURLLoader() = 0;
+
+  virtual void AnnotatedRegionsChanged() = 0;
 };
 
 }  // namespace blink
 
 #endif  // LocalFrameClient_h