Revert changes to have ExtensionService notify ThemeService directly for themes

chrome/browser/extensions/extension_service.cc

 // 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.
 
 #include "chrome/browser/extensions/extension_service.h"
 
 #include <algorithm>
 #include <iterator>
 #include <set>
 
@@ skipping 2532 matching lines @@
 void ExtensionService::FinishInstallation(const Extension* extension) {
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_EXTENSION_INSTALLED,
       content::Source<Profile>(profile_),
       content::Details<const Extension>(extension));
 
   bool unacknowledged_external = IsUnacknowledgedExternalExtension(extension);
 
   AddExtension(extension);
 
-#if defined(ENABLE_THEMES)
-  // We do this here since AddExtension() is always called on browser
-  // startup, and we only really care about the last theme installed.
-  // If that ever changes and we have to move this code somewhere
-  // else, it should be somewhere that's not in the startup path.
-  if (extension->is_theme() && extensions_.GetByID(extension->id())) {
-    DCHECK_EQ(extensions_.GetByID(extension->id()), extension);
-    // Now that the theme extension is visible from outside the
-    // ExtensionService, notify the ThemeService about the
-    // newly-installed theme.
-    ThemeServiceFactory::GetForProfile(profile_)->SetTheme(extension);
-  }
-#endif
-
   // If this is a new external extension that was disabled, alert the user
   // so he can reenable it. We do this last so that it has already been
   // added to our list of extensions.
   if (unacknowledged_external) {
     UpdateExternalExtensionAlert();
     UMA_HISTOGRAM_ENUMERATION("Extensions.ExternalExtensionEvent",
                               EXTERNAL_EXTENSION_INSTALLED,
                               EXTERNAL_EXTENSION_BUCKET_BOUNDARY);
   }
 }
@@ skipping 574 matching lines @@
     scoped_refptr<const Extension> extension = GetInstalledExtension(*it);
     DCHECK(extension);
     if (!extension)
       continue;
     blacklisted_extensions_.Insert(extension);
     UnloadExtension(*it, extension_misc::UNLOAD_REASON_BLACKLIST);
   }
 
   IdentifyAlertableExtensions();
 }