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

third_party/WebKit/public/web/WebViewClient.h

Index: third_party/WebKit/public/web/WebViewClient.h
diff --git a/third_party/WebKit/public/web/WebViewClient.h b/third_party/WebKit/public/web/WebViewClient.h
index 8be346ca002530dda78ffc74c015a87d4927460a..0ff83feae7b58950b0ccf67f73d261d36d46bf11 100644
--- a/third_party/WebKit/public/web/WebViewClient.h
+++ b/third_party/WebKit/public/web/WebViewClient.h
@@ -227,10 +227,7 @@ class WebViewClient : protected WebWidgetClient {
   // Informs the browser that the page scale has changed.
   virtual void PageScaleFactorChanged() {}
 
-  // Draggable regions ----------------------------------------------------
-
-  // Informs the browser that the draggable regions have been updated.
-  virtual void DraggableRegionsChanged() {}
+  // Gestures -------------------------------------------------------------
 
   virtual bool CanHandleGestureEvent() { return false; }