Adds BeginFrameControl via DevTools.

content/browser/web_contents/web_contents_view_aura.cc

 // 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.
 
 #include "content/browser/web_contents/web_contents_view_aura.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/auto_reset.h"
@@ skipping 833 matching lines @@
   }
 
   if (!enabled) {
     navigation_overlay_.reset();
   } else if (!navigation_overlay_) {
     navigation_overlay_.reset(
         new OverscrollNavigationOverlay(web_contents_, window_.get()));
   }
 }
 
+ui::Compositor* WebContentsViewAura::GetCompositor() const {
+  return window_ ? window_->GetHost()->compositor() : nullptr;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // WebContentsViewAura, RenderViewHostDelegateView implementation:
 
 void WebContentsViewAura::ShowContextMenu(RenderFrameHost* render_frame_host,
                                           const ContextMenuParams& params) {
   TouchSelectionControllerClientAura* selection_controller_client =
       GetSelectionControllerClient();
   if (selection_controller_client &&
       selection_controller_client->HandleContextMenu(params)) {
     return;
@@ skipping 354 matching lines @@
                                         bool allow_multiple_selection) {
   NOTIMPLEMENTED() << " show " << items.size() << " menu items";
 }
 
 void WebContentsViewAura::HidePopupMenu() {
   NOTIMPLEMENTED();
 }
 #endif
 
 }  // namespace content