Use ExtensionRegistryObserver instead of deprecated extension notification from c/b/e/api.

chrome/browser/extensions/api/alarms/alarm_manager.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_EXTENSIONS_API_ALARMS_ALARM_MANAGER_H__
 #define CHROME_BROWSER_EXTENSIONS_API_ALARMS_ALARM_MANAGER_H__
 
 #include <map>
 #include <queue>
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/memory/weak_ptr.h"
+#include "base/scoped_observer.h"
 #include "base/timer/timer.h"
 #include "chrome/common/extensions/api/alarms.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "extensions/browser/browser_context_keyed_api_factory.h"
 #include "extensions/browser/extension_function.h"
-
-class Profile;
+#include "extensions/browser/extension_registry_observer.h"
 
 namespace base {
 class Clock;
 }  // namespace base
 
 namespace content {
 class BrowserContext;
 }  // namespace content
 
 namespace extensions {
-
 class ExtensionAlarmsSchedulingTest;
+class ExtensionRegistry;
 
 struct Alarm {
   Alarm();
   Alarm(const std::string& name,
         const api::alarms::AlarmCreateInfo& create_info,
         base::TimeDelta min_granularity,
         base::Time now);
   ~Alarm();
 
   linked_ptr<api::alarms::Alarm> js_alarm;
   // The granularity isn't exposed to the extension's javascript, but we poll at
   // least as often as the shortest alarm's granularity.  It's initialized as
   // the relative delay requested in creation, even if creation uses an absolute
   // time.  This will always be at least as large as the min_granularity
   // constructor argument.
   base::TimeDelta granularity;
   // The minimum granularity is the minimum allowed polling rate. This stops
   // alarms from polling too often.
   base::TimeDelta minimum_granularity;
 };
 
 // Manages the currently pending alarms for every extension in a profile.
 // There is one manager per virtual Profile.
 class AlarmManager : public BrowserContextKeyedAPI,
                      public content::NotificationObserver,
+                     public ExtensionRegistryObserver,
                      public base::SupportsWeakPtr<AlarmManager> {
  public:
   typedef std::vector<Alarm> AlarmList;
 
   class Delegate {
    public:
     virtual ~Delegate() {}
     // Called when an alarm fires.
     virtual void OnAlarm(const std::string& extension_id,
                          const Alarm& alarm) = 0;
@@ skipping 37 matching lines @@
   // when done.
   void RemoveAllAlarms(
       const std::string& extension_id, const RemoveAllAlarmsCallback& callback);
 
   // Replaces AlarmManager's owned clock with |clock| and takes ownership of it.
   void SetClockForTesting(base::Clock* clock);
 
   // BrowserContextKeyedAPI implementation.
   static BrowserContextKeyedAPIFactory<AlarmManager>* GetFactoryInstance();
 
-  // Convenience method to get the AlarmManager for a profile.
-  static AlarmManager* Get(Profile* profile);
+  // Convenience method to get the AlarmManager for a content::BrowserContext.
+  static AlarmManager* Get(content::BrowserContext* browser_context);
 
  private:
   friend void RunScheduleNextPoll(AlarmManager*);
   friend class ExtensionAlarmsSchedulingTest;
   FRIEND_TEST_ALL_PREFIXES(ExtensionAlarmsSchedulingTest, PollScheduling);
   FRIEND_TEST_ALL_PREFIXES(ExtensionAlarmsSchedulingTest,
                            ReleasedExtensionPollsInfrequently);
   FRIEND_TEST_ALL_PREFIXES(ExtensionAlarmsSchedulingTest, TimerRunning);
   FRIEND_TEST_ALL_PREFIXES(ExtensionAlarmsSchedulingTest, MinimumGranularity);
   FRIEND_TEST_ALL_PREFIXES(ExtensionAlarmsSchedulingTest,
@@ skipping 72 matching lines @@
 
   // Executes |action| for given extension, making sure that the extension's
   // alarm data has been synced from the storage.
   void RunWhenReady(const std::string& extension_id, const ReadyAction& action);
 
   // NotificationObserver:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
+  // Overridden from extensions::ExtensionRegistryObserver.
+  virtual void OnExtensionLoaded(content::BrowserContext* browser_context,
+                                 const Extension* extension) OVERRIDE;
+
   // BrowserContextKeyedAPI implementation.
   static const char* service_name() {
     return "AlarmManager";
   }
   static const bool kServiceHasOwnInstanceInIncognito = true;
 
-  Profile* const profile_;
+  content::BrowserContext* const browser_context_;
   scoped_ptr<base::Clock> clock_;
   content::NotificationRegistrar registrar_;
   scoped_ptr<Delegate> delegate_;
 
+  // Listen to extension load notifications.
+  ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
+      extension_registry_observer_;
+
   // The timer for this alarm manager.
   base::OneShotTimer<AlarmManager> timer_;
 
   // A map of our pending alarms, per extension.
   // Invariant: None of the AlarmLists are empty.
   AlarmMap alarms_;
 
   // A map of actions waiting for alarm data to be synced from storage, per
   // extension.
   ReadyMap ready_actions_;
 
   // The previous time that alarms were run.
   base::Time last_poll_time_;
 
   // Next poll's time.
   base::Time next_poll_time_;
 
   DISALLOW_COPY_AND_ASSIGN(AlarmManager);
 };
 
 }  //  namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_ALARMS_ALARM_MANAGER_H__