Remove SigninDelegateObserver.

chrome/browser/ui/app_list/chrome_signin_delegate.cc

 // Copyright 2013 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/ui/app_list/chrome_signin_delegate.h"
 
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/signin/signin_manager.h"
 #include "chrome/browser/signin/signin_manager_factory.h"
 #include "chrome/browser/signin/signin_promo.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/browser_navigator.h"
 #include "chrome/browser/ui/chrome_pages.h"
 #include "chrome/browser/ui/extensions/application_launch.h"
 #include "chrome/browser/ui/host_desktop.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "content/public/common/page_transition_types.h"
 #include "grit/chromium_strings.h"
 #include "grit/generated_resources.h"
-#include "ui/app_list/signin_delegate_observer.h"
 #include "ui/base/resource/resource_bundle.h"
 
 namespace {
 
 SigninManagerBase* GetSigninManager(Profile* profile) {
   return SigninManagerFactory::GetForProfile(profile);
 }
 
 }  // namespace
 
@@ skipping 10 matching lines @@
   if (!GetSigninManager(profile_))
     return false;
 
   return GetSigninManager(profile_)->GetAuthenticatedUsername().empty();
 #endif
 }
 
 void ChromeSigninDelegate::ShowSignin() {
   DCHECK(profile_);
 
-  signin_tracker_.reset(new SigninTracker(profile_, this));
-
   Browser* browser = FindOrCreateTabbedBrowser(profile_,
                                                chrome::GetActiveDesktop());
   chrome::ShowBrowserSignin(browser, signin::SOURCE_APP_LAUNCHER);
 }
 
 void ChromeSigninDelegate::OpenLearnMore() {
   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
   GURL gurl(rb.GetLocalizedString(IDS_APP_LIST_SIGNIN_LEARN_MORE_LINK));
   chrome::NavigateParams params(profile_, gurl, content::PAGE_TRANSITION_LINK);
   chrome::Navigate(&params);
@@ skipping 30 matching lines @@
   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
   return rb.GetLocalizedString(IDS_APP_LIST_SIGNIN_LEARN_MORE_TEXT);
 }
 
 string16 ChromeSigninDelegate::GetSettingsLinkText() {
   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
   return rb.GetLocalizedString(IDS_APP_LIST_SIGNIN_SETTINGS_TEXT);
 }
 
 ChromeSigninDelegate::~ChromeSigninDelegate() {}
-
-void ChromeSigninDelegate::SigninFailed(const GoogleServiceAuthError& error) {}
-
-void ChromeSigninDelegate::SigninSuccess() {
-  NotifySigninSuccess();
-}