Return the WebViewFrameWidget in RenderWidget::webwidget() if there

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 121 matching lines @@
 
   // Closes a RenderWidget that was created by |CreateForFrame|.
   // TODO(avi): De-virtualize this once RenderViewImpl has-a RenderWidget.
   // https://crbug.com/545684
   virtual void CloseForFrame();
 
   int32_t routing_id() const { return routing_id_; }
   void SetRoutingID(int32_t routing_id);
 
   CompositorDependencies* compositor_deps() const { return compositor_deps_; }
-  blink::WebWidget* webwidget() const { return webwidget_; }
+  virtual blink::WebWidget* webwidget() const;

[esprehn, 2016/09/01 00:37:58]

This doesn't match the chromium style that lowercase methods are supposed to be
cheap and non-virtual.

GetWebWidget() ?

   const gfx::Size& size() const { return size_; }
   bool is_fullscreen_granted() const { return is_fullscreen_granted_; }
   blink::WebDisplayMode display_mode() const { return display_mode_; }
   bool is_hidden() const { return is_hidden_; }
   // Temporary for debugging purposes...
   bool closing() const { return closing_; }
   bool is_swapped_out() { return is_swapped_out_; }
   bool has_host_context_menu_location() {
     return has_host_context_menu_location_;
   }
@@ skipping 641 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_