Convert SigninTracker to use OAuth2TokenService notifications

chrome/browser/signin/fake_profile_oauth2_token_service.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/signin/fake_profile_oauth2_token_service.h"
 
 FakeProfileOAuth2TokenService::PendingRequest::PendingRequest() {
 }
 
 FakeProfileOAuth2TokenService::PendingRequest::~PendingRequest() {
 }
 
 // static
 BrowserContextKeyedService* FakeProfileOAuth2TokenService::Build(
     content::BrowserContext* profile) {
-  return new FakeProfileOAuth2TokenService();
+  FakeProfileOAuth2TokenService* service = new FakeProfileOAuth2TokenService();
+  service->Initialize(reinterpret_cast<Profile*>(profile));
+  return service;
 }
 
 FakeProfileOAuth2TokenService::FakeProfileOAuth2TokenService() {
 }
 
 FakeProfileOAuth2TokenService::~FakeProfileOAuth2TokenService() {
 }
 
-void FakeProfileOAuth2TokenService::Shutdown() {
-  // Do not call the base class handler because it assumes that Initialize()
-  // is always called before Shutdown() and that's not the case for this mock.
-}
-
 void FakeProfileOAuth2TokenService::IssueRefreshToken(
     const std::string& token) {
   refresh_token_ = token;
   if (refresh_token_.empty())
     FireRefreshTokenRevoked("account_id");
   else
     FireRefreshTokenAvailable("account_id");
   // TODO(atwilson): Maybe we should also call FireRefreshTokensLoaded() here?
 }
 
@@ skipping 71 matching lines @@
     const std::string& client_id,
     const std::string& client_secret,
     const ScopeSet& scopes) {
   PendingRequest pending_request;
   pending_request.client_id = client_id;
   pending_request.client_secret = client_secret;
   pending_request.scopes = scopes;
   pending_request.request = request->AsWeakPtr();
   pending_requests_.push_back(pending_request);
 }