Make RenderView call the plugin through WebKit::WebPlugin (instead of casting...

webkit/glue/plugins/pepper_plugin_delegate.h

Index: webkit/glue/plugins/pepper_plugin_delegate.h
===================================================================
--- webkit/glue/plugins/pepper_plugin_delegate.h	(revision 51864)
+++ webkit/glue/plugins/pepper_plugin_delegate.h	(working copy)
@@ -44,6 +44,14 @@
 
   // The caller will own the pointer returned from this.
   virtual PlatformImage2D* CreateImage2D(int width, int height) = 0;
+
+  // Notifies that the number of find results has changed.
+  virtual void DidChangeNumberOfFindResults(int identifier,
+                                           int total,
+                                           bool final_result) = 0;
+
+  // Notifies that the index of the currently selected item has been updated.
+  virtual void DidChangeSelectedFindResult(int identifier, int index) = 0;
 };
 
 }  // namespace pepper