Remove deprecated extension notification from themeservice.

chrome/browser/themes/theme_service.h

Index: chrome/browser/themes/theme_service.h
diff --git a/chrome/browser/themes/theme_service.h b/chrome/browser/themes/theme_service.h
index b70fd74c3cdb19ec7b8f273e11b1dbbd4532cba1..40df22bc351ed9f478c4f42c100fad741996ec22 100644
--- a/chrome/browser/themes/theme_service.h
+++ b/chrome/browser/themes/theme_service.h
@@ -18,6 +18,7 @@
 #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 "ui/base/theme_provider.h"
 
 class CustomThemeSupplier;
@@ -35,6 +36,7 @@ struct HSL;
 
 namespace extensions {
 class Extension;
+class ExtensionRegistry;
 }
 
 namespace gfx {
@@ -58,6 +60,7 @@ extern "C" NSString* const kBrowserThemeDidChangeNotification;
 
 class ThemeService : public base::NonThreadSafe,
                      public content::NotificationObserver,
+                     public extensions::ExtensionRegistryObserver,
                      public KeyedService,
                      public ui::ThemeProvider {
  public:
@@ -97,6 +100,24 @@ class ThemeService : public base::NonThreadSafe,
                const content::NotificationSource& source,
                const content::NotificationDetails& details) override;
 
+  // extensions::ExtensionRegistryObserver:
+  void OnExtensionLoaded(
+      content::BrowserContext* browser_context,
+      const extensions::Extension* extension) override;
+  void OnExtensionUnloaded(
+      content::BrowserContext* browser_context,
+      const extensions::Extension* extension,
+      extensions::UnloadedExtensionInfo::Reason reason) override;
+  void OnExtensionWillBeInstalled(
+      content::BrowserContext* browser_context,
+      const extensions::Extension* extension,
+      bool is_update,
+      bool from_ephemeral,
+      const std::string& old_name) override;
+
+  // KeyedService:
+  void Shutdown() override;
+
   // Set the current theme to the theme defined in |extension|.
   // |extension| must already be added to this profile's
   // ExtensionService.
@@ -246,6 +267,8 @@ class ThemeService : public base::NonThreadSafe,
 
   content::NotificationRegistrar registrar_;
 
+  extensions::ExtensionRegistry* extension_registry_;
+
   scoped_ptr<ThemeSyncableService> theme_syncable_service_;
 
   base::WeakPtrFactory<ThemeService> weak_ptr_factory_;