Implement Mac Pop-up Dictionary for OOPIF.

content/renderer/render_view_impl.h

Index: content/renderer/render_view_impl.h
diff --git a/content/renderer/render_view_impl.h b/content/renderer/render_view_impl.h
index f33fd570ea7aa0a359acccf747b0b91b8a995852..79fe98e9e7c3c3cd07db770b128aadafedac916a 100644
--- a/content/renderer/render_view_impl.h
+++ b/content/renderer/render_view_impl.h
@@ -238,16 +238,6 @@ class CONTENT_EXPORT RenderViewImpl
 
   void AttachWebFrameWidget(blink::WebFrameWidget* frame_widget);
 
-  // Plugin-related functions --------------------------------------------------
-
-#if defined(ENABLE_PLUGINS)
-  // TODO(ekaramad): This method is only used by TextInputClientObserver.
-  // Ideally, TextInputClientObserver should use RenderFrame/RenderWidget to
-  // obtain the plugin. Come back to this later when implementing IME for Mac
-  // to see if we can remove this API (https://crbug.com/578168).
-  PepperPluginInstanceImpl* GetFocusedPepperPlugin();
-#endif  // ENABLE_PLUGINS
-
   void TransferActiveWheelFlingAnimation(
       const blink::WebActiveWheelFlingParameters& params);