Adds BeginFrameControl via DevTools.

content/browser/web_contents/web_contents_view.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_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_H_
 
 #include <string>
 
 #include "base/strings/string16.h"
 #include "build/build_config.h"
 #include "content/common/content_export.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gfx/native_widget_types.h"
 
+namespace ui {
+class Compositor;
+}
+
 namespace content {
 class RenderViewHost;
 class RenderWidgetHost;
 class RenderWidgetHostViewBase;
 struct DropData;
 struct ScreenInfo;
 
 // The WebContentsView is an interface that is implemented by the platform-
 // dependent web contents views. The WebContents uses this interface to talk to
 // them.
@@ skipping 81 matching lines @@
   // fully created.
   virtual void RenderViewCreated(RenderViewHost* host) = 0;
 
   // Invoked when the WebContents is notified that the RenderView has been
   // swapped in.
   virtual void RenderViewSwappedIn(RenderViewHost* host) = 0;
 
   // Invoked to enable/disable overscroll gesture navigation.
   virtual void SetOverscrollControllerEnabled(bool enabled) = 0;
 
+  // Returns the Compositor currently responsible for the view. Only supported
+  // on aura; is null on all other platforms.
+  virtual ui::Compositor* GetCompositor() const = 0;
+
 #if defined(OS_MACOSX)
   // Allowing other views disables optimizations which assume that only a single
   // WebContents is present.
   virtual void SetAllowOtherViews(bool allow) = 0;
 
   // Returns true if other views are allowed, false otherwise.
   virtual bool GetAllowOtherViews() const = 0;
 
   // If we close the tab while a UI control is in an event-tracking
   // loop, the control may message freed objects and crash.
   // WebContents::Close() calls IsEventTracking(), and if it returns
   // true CloseTabAfterEventTracking() is called and the close is not
   // completed.
   virtual bool IsEventTracking() const = 0;
   virtual void CloseTabAfterEventTracking() = 0;
 #endif
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_H_