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

content/renderer/render_frame_impl.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_RENDER_FRAME_IMPL_H_
 #define CONTENT_RENDERER_RENDER_FRAME_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 650 matching lines @@
                                const blink::WebURL& url,
                                const blink::WebString& title) override;
   void UnregisterProtocolHandler(const blink::WebString& scheme,
                                  const blink::WebURL& url) override;
   void CheckIfAudioSinkExistsAndIsAuthorized(
       const blink::WebString& sink_id,
       const blink::WebSecurityOrigin& security_origin,
       blink::WebSetSinkIdCallbacks* web_callbacks) override;
   blink::WebPageVisibilityState VisibilityState() const override;
   std::unique_ptr<blink::WebURLLoader> CreateURLLoader() override;
+  void DraggableRegionsChanged() override;
 
   // WebFrameSerializerClient implementation:
   void DidSerializeDataForFrame(
       const blink::WebCString& data,
       blink::WebFrameSerializerClient::FrameSerializationStatus status)
       override;
 
   // Binds to the site engagement service in the browser.
   void BindEngagement(blink::mojom::EngagementClientAssociatedRequest request);
 
@@ skipping 737 matching lines @@
   std::vector<media::RoutingTokenCallback> pending_routing_token_callbacks_;
 
   base::WeakPtrFactory<RenderFrameImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_FRAME_IMPL_H_