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

third_party/WebKit/public/web/WebFrameClient.h

 /*
  * Copyright (C) 2011, 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 777 matching lines @@
     return kWebPageVisibilityStateVisible;
   }
 
   // Overwrites the given URL to use an HTML5 embed if possible.
   // An empty URL is returned if the URL is not overriden.
   virtual WebURL OverrideFlashEmbedWithHTML(const WebURL& url) {
     return WebURL();
   }
 
   // Loading --------------------------------------------------------------
+
   virtual std::unique_ptr<blink::WebURLLoader> CreateURLLoader() {
     NOTREACHED();
     return nullptr;
   }
+
+  // Other methods --------------------------------------------------------

[dcheng, 2017/06/07 20:22:35]

Nit: let's just call this Draggable regions still, despite the fact that it's
basically a one-off method. Alternatively, we could consider grouping it under
Geometry methods.

[Łukasz Anforowicz, 2017/06/08 16:29:24]

Done:
- I've moved the declaration into "Geometry notifications" section
- I've also changed "Other methods" in WebViewClient.h to "Gestures".

+
+  // Informs the browser that the draggable regions have been updated.
+  virtual void DraggableRegionsChanged() {}
 };
 
 }  // namespace blink
 
 #endif