cleanup: Remove NOTIFICATION_EXTENSION_INSTALLED_DEPRECATED from c/b/apps

Use ExtensionRegistry instead.

R=kalman@chromium.org
BUG=376293

Review URL: https://codereview.chromium.org/298253002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@273115 0039d316-1c4b-4281-b951-d872f2087c98

4 files changed, 93 insertions, 63 deletions

diff --git a/chrome/browser/apps/ephemeral_app_service.cc b/chrome/browser/apps/ephemeral_app_service.cc
index 0e4e117..9ed8a56 100644
--- a/chrome/browser/apps/ephemeral_app_service.cc
+++ b/chrome/browser/apps/ephemeral_app_service.cc
@@ -62,16 +62,14 @@ EphemeralAppService* EphemeralAppService::Get(Profile* profile) {
 
 EphemeralAppService::EphemeralAppService(Profile* profile)
     : profile_(profile),
+      extension_registry_observer_(this),
       ephemeral_app_count_(-1) {
   if (!CommandLine::ForCurrentProcess()->HasSwitch(
             switches::kEnableEphemeralApps))
     return;
 
-  registrar_.Add(this,
-                 chrome::NOTIFICATION_EXTENSION_INSTALLED_DEPRECATED,
-                 content::Source<Profile>(profile_));
-  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNINSTALLED,
-                 content::Source<Profile>(profile_));
+  extension_registry_observer_.Add(
+      extensions::ExtensionRegistry::Get(profile_));
   registrar_.Add(this, chrome::NOTIFICATION_EXTENSIONS_READY,
                  content::Source<Profile>(profile_));
   registrar_.Add(this, chrome::NOTIFICATION_PROFILE_DESTROYED,
@@ -90,26 +88,6 @@ void EphemeralAppService::Observe(
       Init();
       break;
     }
-    case chrome::NOTIFICATION_EXTENSION_INSTALLED_DEPRECATED: {
-      const Extension* extension =
-          content::Details<const InstalledExtensionInfo>(details)->extension;
-      DCHECK(extension);
-      if (extensions::util::IsEphemeralApp(extension->id(), profile_)) {
-        ++ephemeral_app_count_;
-        if (ephemeral_app_count_ >= kGarbageCollectAppsTriggerCount)
-          TriggerGarbageCollect(
-              base::TimeDelta::FromSeconds(kGarbageCollectAppsInstallDelay));
-      }
-      break;
-    }
-    case chrome::NOTIFICATION_EXTENSION_UNINSTALLED: {
-      const Extension* extension =
-          content::Details<const Extension>(details).ptr();
-      DCHECK(extension);
-      if (extensions::util::IsEphemeralApp(extension->id(), profile_))
-        --ephemeral_app_count_;
-      break;
-    }
     case chrome::NOTIFICATION_PROFILE_DESTROYED: {
       // Ideally we need to know when the extension system is shutting down.
       garbage_collect_apps_timer_.Stop();
@@ -120,6 +98,26 @@ void EphemeralAppService::Observe(
   }
 }
 
+void EphemeralAppService::OnExtensionWillBeInstalled(
+    content::BrowserContext* browser_context,
+    const extensions::Extension* extension,
+    bool is_update,
+    const std::string& old_name) {
+  if (extensions::util::IsEphemeralApp(extension->id(), profile_)) {
+    ++ephemeral_app_count_;
+    if (ephemeral_app_count_ >= kGarbageCollectAppsTriggerCount)
+      TriggerGarbageCollect(
+          base::TimeDelta::FromSeconds(kGarbageCollectAppsInstallDelay));
+  }
+}
+
+void EphemeralAppService::OnExtensionUninstalled(
+    content::BrowserContext* browser_context,
+    const extensions::Extension* extension) {
+  if (extensions::util::IsEphemeralApp(extension->id(), profile_))
+    --ephemeral_app_count_;
+}
+
 void EphemeralAppService::Init() {
   InitEphemeralAppCount();
   TriggerGarbageCollect(
diff --git a/chrome/browser/apps/ephemeral_app_service.h b/chrome/browser/apps/ephemeral_app_service.h
index a1d4fbb..edad28d 100644
--- a/chrome/browser/apps/ephemeral_app_service.h
+++ b/chrome/browser/apps/ephemeral_app_service.h
@@ -8,20 +8,24 @@
 #include <map>
 #include <set>
 
+#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;
 
 namespace extensions {
 class Extension;
+class ExtensionRegistry;
 }  // namespace extensions
 
 // Performs the background garbage collection of ephemeral apps.
 class EphemeralAppService : public KeyedService,
-                            public content::NotificationObserver {
+                            public content::NotificationObserver,
+                            public extensions::ExtensionRegistryObserver {
  public:
   // Returns the instance for the given profile. This is a convenience wrapper
   // around EphemeralAppServiceFactory::GetForProfile.
@@ -52,6 +56,16 @@ class EphemeralAppService : public KeyedService,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
+  // extensions::ExtensionRegistryObserver.
+  virtual void OnExtensionWillBeInstalled(
+      content::BrowserContext* browser_context,
+      const extensions::Extension* extension,
+      bool is_update,
+      const std::string& old_name) OVERRIDE;
+  virtual void OnExtensionUninstalled(
+      content::BrowserContext* browser_context,
+      const extensions::Extension* extension) OVERRIDE;
+
   void Init();
   void InitEphemeralAppCount();
 
@@ -70,6 +84,10 @@ class EphemeralAppService : public KeyedService,
 
   content::NotificationRegistrar registrar_;
 
+  ScopedObserver<extensions::ExtensionRegistry,
+                 extensions::ExtensionRegistryObserver>
+      extension_registry_observer_;
+
   base::OneShotTimer<EphemeralAppService> garbage_collect_apps_timer_;
   base::OneShotTimer<EphemeralAppService> garbage_collect_data_timer_;
 
diff --git a/chrome/browser/apps/shortcut_manager.cc b/chrome/browser/apps/shortcut_manager.cc
index 2e5221a..efb54cc 100644
--- a/chrome/browser/apps/shortcut_manager.cc
+++ b/chrome/browser/apps/shortcut_manager.cc
@@ -25,6 +25,7 @@
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_source.h"
+#include "extensions/browser/extension_registry.h"
 #include "extensions/browser/extension_system.h"
 #include "extensions/common/extension_set.h"
 
@@ -64,18 +65,16 @@ void AppShortcutManager::RegisterProfilePrefs(
 AppShortcutManager::AppShortcutManager(Profile* profile)
     : profile_(profile),
       is_profile_info_cache_observer_(false),
-      prefs_(profile->GetPrefs()) {
+      prefs_(profile->GetPrefs()),
+      extension_registry_observer_(this) {
   // Use of g_browser_process requires that we are either on the UI thread, or
   // there are no threads initialized (such as in unit tests).
   DCHECK(!content::BrowserThread::IsThreadInitialized(
              content::BrowserThread::UI) ||
          content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
 
-  registrar_.Add(this,
-                 chrome::NOTIFICATION_EXTENSION_INSTALLED_DEPRECATED,
-                 content::Source<Profile>(profile_));
-  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNINSTALLED,
-                 content::Source<Profile>(profile_));
+  extension_registry_observer_.Add(
+      extensions::ExtensionRegistry::Get(profile_));
   // Wait for extensions to be ready before running OnceOffCreateShortcuts.
   registrar_.Add(this, chrome::NOTIFICATION_EXTENSIONS_READY,
                  content::Source<Profile>(profile_));
@@ -100,38 +99,32 @@ AppShortcutManager::~AppShortcutManager() {
 void AppShortcutManager::Observe(int type,
                                  const content::NotificationSource& source,
                                  const content::NotificationDetails& details) {
-  switch (type) {
-    case chrome::NOTIFICATION_EXTENSIONS_READY: {
-      OnceOffCreateShortcuts();
-      break;
-    }
-    case chrome::NOTIFICATION_EXTENSION_INSTALLED_DEPRECATED: {
-      const extensions::InstalledExtensionInfo* installed_info =
-          content::Details<const extensions::InstalledExtensionInfo>(details)
-              .ptr();
-      const Extension* extension = installed_info->extension;
-      // If the app is being updated, update any existing shortcuts but do not
-      // create new ones. If it is being installed, automatically create a
-      // shortcut in the applications menu (e.g., Start Menu).
-      if (installed_info->is_update) {
-        web_app::UpdateAllShortcuts(
-            base::UTF8ToUTF16(installed_info->old_name), profile_, extension);
-      } else if (ShouldCreateShortcutFor(profile_, extension)) {
-        CreateShortcutsInApplicationsMenu(profile_, extension);
-      }
-      break;
-    }
-    case chrome::NOTIFICATION_EXTENSION_UNINSTALLED: {
-      const Extension* extension = content::Details<const Extension>(
-          details).ptr();
-      web_app::DeleteAllShortcuts(profile_, extension);
-      break;
-    }
-    default:
-      NOTREACHED();
+  DCHECK_EQ(chrome::NOTIFICATION_EXTENSIONS_READY, type);
+  OnceOffCreateShortcuts();
+}
+
+void AppShortcutManager::OnExtensionWillBeInstalled(
+    content::BrowserContext* browser_context,
+    const Extension* extension,
+    bool is_update,
+    const std::string& old_name) {
+  // If the app is being updated, update any existing shortcuts but do not
+  // create new ones. If it is being installed, automatically create a
+  // shortcut in the applications menu (e.g., Start Menu).
+  if (is_update) {
+    web_app::UpdateAllShortcuts(
+        base::UTF8ToUTF16(old_name), profile_, extension);
+  } else if (ShouldCreateShortcutFor(profile_, extension)) {
+    CreateShortcutsInApplicationsMenu(profile_, extension);
   }
 }
 
+void AppShortcutManager::OnExtensionUninstalled(
+    content::BrowserContext* browser_context,
+    const Extension* extension) {
+  web_app::DeleteAllShortcuts(profile_, extension);
+}
+
 void AppShortcutManager::OnProfileWillBeRemoved(
     const base::FilePath& profile_path) {
   if (profile_path != profile_->GetPath())
diff --git a/chrome/browser/apps/shortcut_manager.h b/chrome/browser/apps/shortcut_manager.h
index b94101e..63e9112e 100644
--- a/chrome/browser/apps/shortcut_manager.h
+++ b/chrome/browser/apps/shortcut_manager.h
@@ -5,15 +5,21 @@
 #ifndef CHROME_BROWSER_APPS_SHORTCUT_MANAGER_H_
 #define CHROME_BROWSER_APPS_SHORTCUT_MANAGER_H_
 
+#include "base/scoped_observer.h"
 #include "chrome/browser/profiles/profile_info_cache_observer.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"
 #include "extensions/common/extension.h"
 
 class PrefService;
 class Profile;
 
+namespace extensions {
+class ExtensionRegistry;
+}
+
 namespace user_prefs {
 class PrefRegistrySyncable;
 }
@@ -21,6 +27,7 @@ class PrefRegistrySyncable;
 // This class manages the installation of shortcuts for platform apps.
 class AppShortcutManager : public KeyedService,
                            public content::NotificationObserver,
+                           public extensions::ExtensionRegistryObserver,
                            public ProfileInfoCacheObserver {
  public:
   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
@@ -33,12 +40,22 @@ class AppShortcutManager : public KeyedService,
   // creates shortcuts for all apps.
   void OnceOffCreateShortcuts();
 
-  // content::NotificationObserver
+  // content::NotificationObserver.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
-  // ProfileInfoCacheObserver
+  // extensions::ExtensionRegistryObserver.
+  virtual void OnExtensionWillBeInstalled(
+      content::BrowserContext* browser_context,
+      const extensions::Extension* extension,
+      bool is_update,
+      const std::string& old_name) OVERRIDE;
+  virtual void OnExtensionUninstalled(
+      content::BrowserContext* browser_context,
+      const extensions::Extension* extension) OVERRIDE;
+
+  // ProfileInfoCacheObserver.
   virtual void OnProfileWillBeRemoved(
       const base::FilePath& profile_path) OVERRIDE;
 
@@ -50,6 +67,10 @@ class AppShortcutManager : public KeyedService,
   bool is_profile_info_cache_observer_;
   PrefService* prefs_;
 
+  ScopedObserver<extensions::ExtensionRegistry,
+                 extensions::ExtensionRegistryObserver>
+      extension_registry_observer_;
+
   DISALLOW_COPY_AND_ASSIGN(AppShortcutManager);
 };