Finish extensions <-> task manager integration

chrome/browser/task_manager_resource_providers.h

 // Copyright (c) 2006-2008 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_RESOURCE_PROVIDERS_H_
 #define CHROME_BROWSER_TASK_MANAGER_RESOURCE_PROVIDERS_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 187 matching lines @@
 
   // Cached data about the extension.
   base::ProcessHandle process_handle_;
   int pid_;
   std::wstring title_;
 
   DISALLOW_COPY_AND_ASSIGN(TaskManagerExtensionProcessResource);
 };
 
 class TaskManagerExtensionProcessResourceProvider
-    : public TaskManager::ResourceProvider {
+    : public TaskManager::ResourceProvider,
+      public NotificationObserver {
  public:
   explicit TaskManagerExtensionProcessResourceProvider(
       TaskManager* task_manager);
   virtual ~TaskManagerExtensionProcessResourceProvider();
 
   virtual TaskManager::Resource* GetResource(int origin_pid,
                                              int render_process_host_id,
                                              int routing_id);
   virtual void StartUpdating();
   virtual void StopUpdating();
 
+  // NotificationObserver method:
+  virtual void Observe(NotificationType type,
+                       const NotificationSource& source,
+                       const NotificationDetails& details);
+
  private:
   void AddToTaskManager(ExtensionHost* extension_host);
+  void RemoveFromTaskManager(ExtensionHost* extension_host);
 
   TaskManager* task_manager_;
 
   // Maps the actual resources (ExtensionHost*) to the Task Manager resources.
   std::map<ExtensionHost*, TaskManagerExtensionProcessResource*> resources_;
 
   // Maps the pids to the resources (used for quick access to the resource on
   // byte read notifications).
   std::map<int, TaskManagerExtensionProcessResource*> pid_to_resources_;
 
+  // A scoped container for notification registries.
+  NotificationRegistrar registrar_;
+
   bool updating_;
 
   DISALLOW_COPY_AND_ASSIGN(TaskManagerExtensionProcessResourceProvider);
 };
 
 class TaskManagerBrowserProcessResource : public TaskManager::Resource {
  public:
   TaskManagerBrowserProcessResource();
   ~TaskManagerBrowserProcessResource();
 
@@ skipping 44 matching lines @@
  private:
   void AddToTaskManager(ChildProcessInfo child_process_info);
 
   TaskManager* task_manager_;
   TaskManagerBrowserProcessResource resource_;
 
   DISALLOW_COPY_AND_ASSIGN(TaskManagerBrowserProcessResourceProvider);
 };
 
 #endif  // CHROME_BROWSER_TASK_MANAGER_RESOURCE_PROVIDERS_H_