Implement a prototype to render cross-site iframes in a separate process from their parent.

chrome/browser/task_manager/task_manager_resource_providers.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 CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_RESOURCE_PROVIDERS_H_
 #define CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_RESOURCE_PROVIDERS_H_
 
 #include <map>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/process_util.h"
 #include "chrome/browser/task_manager/task_manager.h"
 #include "content/public/browser/child_process_data.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/common/process_type.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebCache.h"
 
 class BackgroundContents;
 class BalloonHost;
 class Panel;
 class Profile;
 
 namespace content {
 class RenderViewHost;
 class WebContents;
+class RenderProcessHost;
 }
 
 namespace extensions {
 class Extension;
 }
 
 // These file contains the resource providers used in the task manager.
 
 // Base class for various types of render process resources that provides common
 // functionality like stats tracking.
@@ skipping 602 matching lines @@
  private:
   DISALLOW_COPY_AND_ASSIGN(TaskManagerGuestResource);
 };
 
 class TaskManagerGuestResourceProvider
     : public TaskManager::ResourceProvider,
       public content::NotificationObserver {
  public:
   explicit TaskManagerGuestResourceProvider(TaskManager* task_manager);
 
+  bool IsOOPIframe(content::RenderProcessHost* host);
+
   // TaskManager::ResourceProvider methods:
   virtual TaskManager::Resource* GetResource(int origin_pid,
                                              int render_process_host_id,
                                              int routing_id) OVERRIDE;
   virtual void StartUpdating() OVERRIDE;
   virtual void StopUpdating() OVERRIDE;
 
   // content::NotificationObserver method:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
@@ skipping 15 matching lines @@
       TaskManagerGuestResource*> GuestResourceMap;
   GuestResourceMap resources_;
 
   // A scoped container for notification registries.
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(TaskManagerGuestResourceProvider);
 };
 
 #endif  // CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_RESOURCE_PROVIDERS_H_