Remove unnecessary image downloading handler of notifications.

chrome/browser/sync/sync_error_notifier_ash.cc

Index: chrome/browser/sync/sync_error_notifier_ash.cc
diff --git a/chrome/browser/sync/sync_error_notifier_ash.cc b/chrome/browser/sync/sync_error_notifier_ash.cc
index e52b511a33e9175613b7577a6bc406352ec273a7..2c014854114198b1661bd97fe605b933db8c648a 100644
--- a/chrome/browser/sync/sync_error_notifier_ash.cc
+++ b/chrome/browser/sync/sync_error_notifier_ash.cc
@@ -52,7 +52,6 @@ class SyncNotificationDelegate : public NotificationDelegate {
   virtual void Click() override;
   virtual void ButtonClick(int button_index) override;
   virtual std::string id() const override;
-  virtual content::WebContents* GetWebContents() const override;
 
  protected:
   virtual ~SyncNotificationDelegate();
@@ -103,10 +102,6 @@ std::string SyncNotificationDelegate::id() const {
   return id_;
 }
 
-content::WebContents* SyncNotificationDelegate::GetWebContents() const {
-  return NULL;
-}
-
 void SyncNotificationDelegate::ShowSyncSetup() {
   LoginUIService* login_ui = LoginUIServiceFactory::GetForProfile(profile_);
   if (login_ui->current_login_ui()) {