Adds BeginFrameControl via DevTools.

content/browser/web_contents/web_contents_view_guest.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_guest.h"
 
 #include <utility>
 
 #include "build/build_config.h"
 #include "content/browser/browser_plugin/browser_plugin_embedder.h"
@@ skipping 154 matching lines @@
 }
 
 void WebContentsViewGuest::RenderViewSwappedIn(RenderViewHost* host) {
   platform_view_->RenderViewSwappedIn(host);
 }
 
 void WebContentsViewGuest::SetOverscrollControllerEnabled(bool enabled) {
   // This should never override the setting of the embedder view.
 }
 
+ui::Compositor* WebContentsViewGuest::GetCompositor() const {
+  return platform_view_->GetCompositor();
+}
+
 #if defined(OS_MACOSX)
 bool WebContentsViewGuest::IsEventTracking() const {
   return false;
 }
 
 void WebContentsViewGuest::CloseTabAfterEventTracking() {
 }
 #endif
 
 WebContents* WebContentsViewGuest::web_contents() {
@@ skipping 55 matching lines @@
       embedder_render_view_host->GetDelegate()->GetDelegateView();
   if (view) {
     RecordAction(base::UserMetricsAction("BrowserPlugin.Guest.StartDrag"));
     view->StartDragging(drop_data, ops, image, image_offset, event_info);
   } else {
     embedder_web_contents->SystemDragEnded();
   }
 }
 
 }  // namespace content