Profile shouldn't own DesktopNotificationService.

chrome/browser/profiles/profile.h

Index: chrome/browser/profiles/profile.h
diff --git a/chrome/browser/profiles/profile.h b/chrome/browser/profiles/profile.h
index e7d17413022b3c83a04b35134a4f354de5dfa16f..3bad14af6e311e31920945279c3023f0b090cff7 100644
--- a/chrome/browser/profiles/profile.h
+++ b/chrome/browser/profiles/profile.h
@@ -49,7 +49,6 @@ class ChromeAppCacheService;
 class ChromeBlobStorageContext;
 class ChromeURLDataManager;
 class CloudPrintProxyService;
-class DesktopNotificationService;
 class DownloadManager;
 class Extension;
 class ExtensionDevToolsManager;
@@ -451,9 +450,6 @@ class Profile {
   // Returns the WebKitContext assigned to this profile.
   virtual WebKitContext* GetWebKitContext() = 0;
 
-  // Returns the provider of desktop notifications for this profile.
-  virtual DesktopNotificationService* GetDesktopNotificationService() = 0;
-
   // Returns the service that manages BackgroundContents for this profile.
   virtual BackgroundContentsService* GetBackgroundContentsService() const = 0;