[sync] Automatic bootstrapping of Sync on Win 8 from cached credentials

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/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/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"
+
+
+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(TokenServiceFactory::GetInstance());
+}
+
+CredentialCacheServiceFactory::~CredentialCacheServiceFactory() {
+}
+
+// static
+bool CredentialCacheServiceFactory::IsDefaultProfile(Profile* profile) {
+  DCHECK(profile);
+  FilePath default_user_data_dir;
+  chrome::GetDefaultUserDataDirectory(&default_user_data_dir);
+  return profile->GetPath() ==
+         ProfileManager::GetDefaultProfileDir(default_user_data_dir);
+}
+
+bool CredentialCacheServiceFactory::ServiceIsCreatedWithProfile() {
+  return true;
+}
+
+ProfileKeyedService* CredentialCacheServiceFactory::BuildServiceInstanceFor(
+    Profile* profile) const {
+  // Only instantiate a CredentialCacheService object if we are running in the
+  // default profile on Windows 8.
+  if (base::win::GetVersion() >= base::win::VERSION_WIN8 &&
+      IsDefaultProfile(profile)) {
+    return new syncer::CredentialCacheService(profile);
+  }
+  return NULL;
+}
+
+}  // namespace syncer