[sync] Add a polling mechanism to CredentialCacheService for on-the-fly sign in / sign out / reconf…

chrome/browser/sync/credential_cache_service_factory_win.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/sync/credential_cache_service_factory_win.h"
 
 #include "base/command_line.h"
 #include "base/memory/singleton.h"
 #include "base/win/windows_version.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_dependency_manager.h"
 #include "chrome/browser/profiles/profile_manager.h"
+#include "chrome/browser/signin/signin_manager_factory.h"
 #include "chrome/browser/signin/token_service_factory.h"
 #include "chrome/browser/sync/credential_cache_service_win.h"
 #include "chrome/browser/sync/profile_sync_service_factory.h"
 #include "chrome/common/chrome_paths_internal.h"
 #include "chrome/common/chrome_switches.h"
 
 
 namespace syncer {
 
 // static
 CredentialCacheServiceFactory* CredentialCacheServiceFactory::GetInstance() {
   return Singleton<CredentialCacheServiceFactory>::get();
 }
 
 // static
 syncer::CredentialCacheService* CredentialCacheServiceFactory::GetForProfile(
     Profile* profile) {
   return static_cast<syncer::CredentialCacheService*>(
       GetInstance()->GetServiceForProfile(profile, true));
 }
 
 CredentialCacheServiceFactory::CredentialCacheServiceFactory()
     : ProfileKeyedServiceFactory("CredentialCacheService",
                                  ProfileDependencyManager::GetInstance()) {
   // TODO(rsimha): Uncomment this once it exists.
   // DependsOn(PrefServiceFactory::GetInstance());
   DependsOn(ProfileSyncServiceFactory::GetInstance());
+  DependsOn(SigninManagerFactory::GetInstance());
   DependsOn(TokenServiceFactory::GetInstance());
 }
 
 CredentialCacheServiceFactory::~CredentialCacheServiceFactory() {
 }
 
 // static
 bool CredentialCacheServiceFactory::IsDefaultProfile(Profile* profile) {
   DCHECK(profile);
   FilePath default_user_data_dir;
@@ skipping 13 matching lines @@
   const CommandLine* command_line = CommandLine::ForCurrentProcess();
   if (base::win::GetVersion() >= base::win::VERSION_WIN8 &&
       IsDefaultProfile(profile) &&
       command_line->HasSwitch(switches::kEnableSyncCredentialCaching)) {
     return new syncer::CredentialCacheService(profile);
   }
   return NULL;
 }
 
 }  // namespace syncer