Remove NOTIFICATION_EXTENSIONS_READY from ephemeral_app_service.cc

Use ExtensionSystem::Ready instead of NOTIFICATION_EXTENSIONS_READY.

R=kalman@chromium.org
BUG=354459

Review URL: https://codereview.chromium.org/1102193002

Cr-Commit-Position: refs/heads/master@{#327171}

chrome/browser/apps/ephemeral_app_service.cc

@@ -8,22 +8,18 @@
 #include "base/command_line.h"
 #include "base/message_loop/message_loop.h"
 #include "chrome/browser/apps/ephemeral_app_service_factory.h"
-#include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_switches.h"
-#include "content/public/browser/notification_service.h"
-#include "content/public/browser/notification_source.h"
-#include "content/public/browser/notification_types.h"
 #include "extensions/browser/extension_prefs.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/browser/extension_system.h"
 #include "extensions/browser/extension_util.h"
-#include "extensions/browser/notification_types.h"
 #include "extensions/browser/uninstall_reason.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/extension_set.h"
+#include "extensions/common/one_shot_event.h"
 
 using extensions::Extension;
 using extensions::ExtensionPrefs;
@@ -71,9 +67,9 @@ EphemeralAppService::EphemeralAppService(Profile* profile)
       ephemeral_app_count_(-1),
       disable_idle_app_delay_(kDefaultDisableAppDelay),
       weak_ptr_factory_(this) {
-  registrar_.Add(this,
-                 extensions::NOTIFICATION_EXTENSIONS_READY_DEPRECATED,
-                 content::Source<Profile>(profile_));
+  ExtensionSystem::Get(profile_)->ready().Post(
+      FROM_HERE,
+      base::Bind(&EphemeralAppService::Init, weak_ptr_factory_.GetWeakPtr()));
 }
 
 EphemeralAppService::~EphemeralAppService() {
@@ -115,20 +111,6 @@ void EphemeralAppService::ClearCachedApps() {
   }
 }
 
-void EphemeralAppService::Observe(
-    int type,
-    const content::NotificationSource& source,
-    const content::NotificationDetails& details) {
-  switch (type) {
-    case extensions::NOTIFICATION_EXTENSIONS_READY_DEPRECATED: {
-      Init();
-      break;
-    }
-    default:
-      NOTREACHED();
-  }
-}
-
 void EphemeralAppService::OnExtensionWillBeInstalled(
     content::BrowserContext* browser_context,
     const extensions::Extension* extension,

chrome/browser/apps/ephemeral_app_service.h

@@ -5,7 +5,6 @@
 #ifndef CHROME_BROWSER_APPS_EPHEMERAL_APP_SERVICE_H_
 #define CHROME_BROWSER_APPS_EPHEMERAL_APP_SERVICE_H_
 
-#include <map>
 #include <set>
 
 #include "apps/app_lifetime_monitor.h"
@@ -13,8 +12,6 @@
 #include "base/scoped_observer.h"
 #include "base/timer/timer.h"
 #include "components/keyed_service/core/keyed_service.h"
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
 #include "extensions/browser/extension_registry_observer.h"
 
 class Profile;
@@ -26,7 +23,6 @@ class ExtensionRegistry;
 
 // Performs the background garbage collection of ephemeral apps.
 class EphemeralAppService : public KeyedService,
-                            public content::NotificationObserver,
                             public extensions::ExtensionRegistryObserver,
                             public apps::AppLifetimeMonitor::Observer {
  public:
@@ -60,11 +56,6 @@ class EphemeralAppService : public KeyedService,
   // A map used to order the ephemeral apps by their last launch time.
   typedef std::multimap<base::Time, std::string> LaunchTimeAppMap;
 
-  // content::NotificationObserver implementation.
-  void Observe(int type,
-               const content::NotificationSource& source,
-               const content::NotificationDetails& details) override;
-
   // extensions::ExtensionRegistryObserver.
   void OnExtensionWillBeInstalled(content::BrowserContext* browser_context,
                                   const extensions::Extension* extension,
@@ -96,7 +87,6 @@ class EphemeralAppService : public KeyedService,
 
   Profile* profile_;
 
-  content::NotificationRegistrar registrar_;
   ScopedObserver<extensions::ExtensionRegistry,
                  extensions::ExtensionRegistryObserver>
       extension_registry_observer_;