content: convert child process notifications to observer usage

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/browser_child_process_observer.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;
@@ skipping 327 matching lines @@
   // The icon painted for the child processs.
   // TODO(jcampan): we should have plugin specific icons for well-known
   // plugins.
   static gfx::ImageSkia* default_icon_;
 
   DISALLOW_COPY_AND_ASSIGN(TaskManagerChildProcessResource);
 };
 
 class TaskManagerChildProcessResourceProvider
     : public TaskManager::ResourceProvider,
-      public content::NotificationObserver {
+      public content::BrowserChildProcessObserver {
  public:
   explicit TaskManagerChildProcessResourceProvider(TaskManager* task_manager);
 
   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,
-                       const content::NotificationDetails& details) OVERRIDE;
+  // content::BrowserChildProcessObserver methods:
+  virtual void BrowserChildProcessHostConnected(
+      const content::ChildProcessData& data) OVERRIDE;
+  virtual void BrowserChildProcessHostDisconnected(
+      const content::ChildProcessData& data) OVERRIDE;
 
  private:
   virtual ~TaskManagerChildProcessResourceProvider();
 
   // Retrieves information about the running ChildProcessHosts (performed in the
   // IO thread).
   virtual void RetrieveChildProcessData();
 
   // Notifies the UI thread that the ChildProcessHosts information have been
   // retrieved.
   virtual void ChildProcessDataRetreived(
       const std::vector<content::ChildProcessData>& child_processes);
 
-  void Add(const content::ChildProcessData& child_process_data);
-  void Remove(const content::ChildProcessData& child_process_data);
-
   void AddToTaskManager(const content::ChildProcessData& child_process_data);
 
   TaskManager* task_manager_;
 
   // Whether we are currently reporting to the task manager. Used to ignore
   // notifications sent after StopUpdating().
   bool updating_;
 
   // Maps the actual resources (the ChildProcessData) to the Task Manager
   // resources.
@@ skipping 274 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_