Give the main frame a RenderWidget.

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 <deque>
 #include <map>
 #include <set>
@@ skipping 30 matching lines @@
 #include "content/renderer/render_frame_impl.h"
 #include "content/renderer/render_widget.h"
 #include "content/renderer/stats_collection_observer.h"
 #include "ipc/ipc_platform_file.h"
 #include "third_party/WebKit/public/platform/WebGraphicsContext3D.h"
 #include "third_party/WebKit/public/platform/WebPageVisibilityState.h"
 #include "third_party/WebKit/public/web/WebAXObject.h"
 #include "third_party/WebKit/public/web/WebConsoleMessage.h"
 #include "third_party/WebKit/public/web/WebDataSource.h"
 #include "third_party/WebKit/public/web/WebElement.h"
+#include "third_party/WebKit/public/web/WebFrameWidget.h"
 #include "third_party/WebKit/public/web/WebHistoryItem.h"
 #include "third_party/WebKit/public/web/WebIconURL.h"
 #include "third_party/WebKit/public/web/WebInputEvent.h"
 #include "third_party/WebKit/public/web/WebNavigationType.h"
 #include "third_party/WebKit/public/web/WebNode.h"
 #include "third_party/WebKit/public/web/WebSecurityOrigin.h"
 #include "third_party/WebKit/public/web/WebViewClient.h"
 #include "ui/base/window_open_disposition.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/rect_f.h"
@@ skipping 167 matching lines @@
   void FrameDidStartLoading(blink::WebFrame* frame);
   void FrameDidStopLoading(blink::WebFrame* frame);
 
   // Sets the zoom level and notifies observers. Doesn't call zoomLevelChanged,
   // 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_; }
 
+  void AttachWebFrameWidget(blink::WebWidget* frame_widget);
+
   // Plugin-related functions --------------------------------------------------
 
 #if defined(ENABLE_PLUGINS)
   // Get/set the plugin which will be used as to handle document find requests.
   void set_plugin_find_handler(PepperPluginInstanceImpl* plugin) {
     plugin_find_handler_ = plugin;
   }
   PepperPluginInstanceImpl* plugin_find_handler() {
     return plugin_find_handler_;
   }
@@ skipping 190 matching lines @@
                               bool animate) override;
 #endif
   bool uses_temporary_zoom_level() const { return uses_temporary_zoom_level_; }
 
   // Please do not add your stuff randomly to the end here. If there is an
   // appropriate section, add it there. If not, there are some random functions
   // nearer to the top you can add it to.
 
  protected:
   // RenderWidget overrides:
+  void CloseForFrame() override;
   void Close() override;
   void OnResize(const ViewMsg_Resize_Params& params) override;
   void DidInitiatePaint() override;
   void DidFlushPaint() override;
   gfx::Vector2d GetScrollOffset() override;
   void DidHandleKeyEvent() override;
   bool WillHandleMouseEvent(const blink::WebMouseEvent& event) override;
   bool WillHandleGestureEvent(const blink::WebGestureEvent& event) override;
   bool HasTouchEventHandlersAt(const gfx::Point& point) const override;
   void OnSetFocus(bool enable) override;
@@ skipping 432 matching lines @@
 
   // Bookkeeping to suppress redundant scroll and focus requests for an already
   // 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_;
+
   // 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.
   MouseLockDispatcher* mouse_lock_dispatcher_;
@@ skipping 99 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_