NOCOMMIT PROTOTYPE [GRC] Tab CPU Usage Observer

chrome/browser/resource_coordinator/resource_coordinator_web_contents_observer.h

 // Copyright 2017 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 CHROME_BROWSER_RESOURCE_COORDINATOR_RESOURCE_COORDINATOR_WEB_CONTENTS_OBSERVER_H_
 #define CHROME_BROWSER_RESOURCE_COORDINATOR_RESOURCE_COORDINATOR_WEB_CONTENTS_OBSERVER_H_
 
+#include <memory>
+
 #include "base/macros.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_user_data.h"
 #include "services/resource_coordinator/public/cpp/resource_coordinator_interface.h"
 
 class ResourceCoordinatorWebContentsObserver
     : public content::WebContentsObserver,
       public content::WebContentsUserData<
           ResourceCoordinatorWebContentsObserver> {
  public:
   ~ResourceCoordinatorWebContentsObserver() override;
 
   static bool IsEnabled();
 
   resource_coordinator::ResourceCoordinatorInterface*
   tab_resource_coordinator() {
     return tab_resource_coordinator_.get();
   }
 
   // WebContentsObserver implementation.
   void WasShown() override;
   void WasHidden() override;
+  void RenderFrameDeleted(content::RenderFrameHost* render_frame_host) override;
+  void RenderFrameHostChanged(content::RenderFrameHost* old_host,
+                              content::RenderFrameHost* new_host) override;
+  void FrameDeleted(content::RenderFrameHost* render_frame_host) override;
   void DidFinishNavigation(
       content::NavigationHandle* navigation_handle) override;
+  void RemoveFrameFromParents(content::RenderFrameHost* render_frame_host);
 
  private:
   explicit ResourceCoordinatorWebContentsObserver(
       content::WebContents* web_contents);
 
   friend class content::WebContentsUserData<
       ResourceCoordinatorWebContentsObserver>;
 
   std::unique_ptr<resource_coordinator::ResourceCoordinatorInterface>
       tab_resource_coordinator_;
 
   DISALLOW_COPY_AND_ASSIGN(ResourceCoordinatorWebContentsObserver);
 };
 
 #endif  // CHROME_BROWSER_RESOURCE_COORDINATOR_RESOURCE_COORDINATOR_WEB_CONTENTS_OBSERVER_H_