Save the oauth client id used in App Notification setup

chrome/browser/extensions/extension_service.h

Index: chrome/browser/extensions/extension_service.h
diff --git a/chrome/browser/extensions/extension_service.h b/chrome/browser/extensions/extension_service.h
index e68deb35f7e1e0b24c03cbf83de44461e47fcd02..57b2f6075358507330b5f1c4b7240231bb8128e7 100644
--- a/chrome/browser/extensions/extension_service.h
+++ b/chrome/browser/extensions/extension_service.h
@@ -210,8 +210,11 @@ class ExtensionService
   virtual void SetIsIncognitoEnabled(const std::string& extension_id,
                                      bool enabled);
 
+  // When app notification setup is done, we call this to save the developer's
+  // oauth client id which we'll need at uninstall time to revoke the oauth
+  // permission grant for sending notifications.
   virtual void SetAppNotificationSetupDone(const std::string& extension_id,
-      bool value);
+                                           const std::string& oauth_client_id);
 
   virtual void SetAppNotificationDisabled(const std::string& extension_id,
       bool value);