Sets a transparent background for out-of-process subframes.

content/renderer/render_view_impl.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_VIEW_IMPL_H_
 #define CONTENT_RENDERER_RENDER_VIEW_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 223 matching lines @@
   // as that is only for changes that aren't initiated by the client.
   void SetZoomLevel(double zoom_level);
 
   // Indicates whether this page has been focused by the browser.
   bool has_focus() const { return has_focus_; }
 
   // Sets page-level focus in this view and notifies plugins and Blink's
   // FocusController.
   void SetFocus(bool enable);
 
-  void AttachWebFrameWidget(blink::WebWidget* frame_widget);
+  void AttachWebFrameWidget(blink::WebFrameWidget* frame_widget);
 
   // Plugin-related functions --------------------------------------------------
 
 #if defined(ENABLE_PLUGINS)
   PepperPluginInstanceImpl* focused_pepper_plugin() {
     return focused_pepper_plugin_;
   }
   PepperPluginInstanceImpl* pepper_last_mouse_event_target() {
     return pepper_last_mouse_event_target_;
   }
@@ skipping 174 matching lines @@
   // RenderView implementation -------------------------------------------------
 
   bool Send(IPC::Message* message) override;
   RenderFrameImpl* GetMainRenderFrame() override;
   int GetRoutingID() const override;
   gfx::Size GetSize() const override;
   float GetDeviceScaleFactor() const override;
   WebPreferences& GetWebkitPreferences() override;
   void SetWebkitPreferences(const WebPreferences& preferences) override;
   blink::WebView* GetWebView() override;
+  blink::WebFrameWidget* GetWebFrameWidget() override;
   bool ShouldDisplayScrollbars(int width, int height) const override;
   int GetEnabledBindings() const override;
   bool GetContentStateImmediately() const override;
   blink::WebPageVisibilityState GetVisibilityState() const override;
   void DidStartLoading() override;
   void DidStopLoading() override;
   void Repaint(const gfx::Size& size) override;
   void SetEditCommandForNextKeyEvent(const std::string& name,
                                      const std::string& value) override;
   void ClearEditCommands() override;
@@ skipping 452 matching lines @@
   // scrolled and focused editable node.
   bool has_scrolled_focused_editable_node_into_rect_;
   gfx::Rect rect_for_scrolled_focused_editable_node_;
 
   // Helper objects ------------------------------------------------------------
 
   RenderFrameImpl* main_render_frame_;
 
   // Note: RenderViewImpl is pulling double duty: it's the RenderWidget for the
   // "view", but it's also the RenderWidget for the main frame.
-  blink::WebWidget* frame_widget_;
+  blink::WebFrameWidget* frame_widget_;
 
   // The next group of objects all implement RenderViewObserver, so are deleted
   // along with the RenderView automatically.  This is why we just store
   // weak references.
 
   // The speech recognition dispatcher attached to this view, lazily
   // initialized.
   SpeechRecognitionDispatcher* speech_recognition_dispatcher_;
 
   // Mouse Lock dispatcher attached to this view.
@@ skipping 95 matching lines @@
   // use the Observer interface to filter IPC messages and receive frame change
   // notifications.
   // ---------------------------------------------------------------------------
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_VIEW_IMPL_H_