Reverting this as it causes browser tests on the Linux ChromiumOS builder to fail.

chrome/browser/signin/signin_manager_fake.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/signin/signin_manager_fake.h"
 
-#include "chrome/common/chrome_notification_types.h"
-#include "content/public/browser/notification_service.h"
-
-FakeSigninManager::FakeSigninManager(Profile* profile) {
-  profile_ = profile;
-}
+FakeSigninManager::FakeSigninManager() {}
 
 FakeSigninManager::~FakeSigninManager() {}
 
 void FakeSigninManager::StartSignIn(const std::string& username,
                                     const std::string& password,
                                     const std::string& login_token,
                                     const std::string& login_captcha) {
   SetAuthenticatedUsername(username);
 }
 
 void FakeSigninManager::StartSignInWithCredentials(
     const std::string& session_index,
     const std::string& username,
     const std::string& password) {
   SetAuthenticatedUsername(username);
 }
 
 void FakeSigninManager::StartSignInWithOAuth(const std::string& username,
                                              const std::string& password) {
   SetAuthenticatedUsername(username);
 }
 
 void FakeSigninManager::SignOut() {
   authenticated_username_.clear();
-  content::NotificationService::current()->Notify(
-      chrome::NOTIFICATION_GOOGLE_SIGNED_OUT,
-      content::Source<Profile>(profile_),
-      content::NotificationService::NoDetails());
 }
 
 // static
 ProfileKeyedService* FakeSigninManager::Build(Profile* profile) {
-  return new FakeSigninManager(profile);
+  return new FakeSigninManager();
 }