Implement Mac Pop-up Dictionary for OOPIF.

content/renderer/render_widget.h

 // Copyright (c) 2012 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_WIDGET_H_
 #define CONTENT_RENDERER_RENDER_WIDGET_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 376 matching lines @@
   // screen coordinates.
   gfx::Rect RootWindowRect();
 
   // Indicates whether this widget has focus.
   bool has_focus() const { return has_focus_; }
 
   MouseLockDispatcher* mouse_lock_dispatcher() {
     return mouse_lock_dispatcher_.get();
   }
 
+  // TODO(ekaramad): The reference to the focused pepper plugin will be removed
+  // from RenderWidget. The purpose of having the reference here was to make IME
+  // work for OOPIF (https://crbug.com/643727).
   void set_focused_pepper_plugin(PepperPluginInstanceImpl* plugin) {
     focused_pepper_plugin_ = plugin;
   }
 
   // When emulated, this returns original device scale factor.
   float GetOriginalDeviceScaleFactor() const;
 
  protected:
   // Friend RefCounted so that the dtor can be non-public. Using this class
   // without ref-counting is an error.
@@ skipping 402 matching lines @@
   // This reference is set by the RenderFrame and is used to query the IME-
   // related state from the plugin to later send to the browser.
   PepperPluginInstanceImpl* focused_pepper_plugin_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidget);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_WIDGET_H_