[Sync] Componentize local_device_info_provider_impl and test

chrome/browser/sync/glue/local_device_info_provider_impl.cc

-// Copyright 2014 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 "base/bind.h"
-#include "chrome/browser/sync/glue/local_device_info_provider_impl.h"
-#include "chrome/common/channel_info.h"
-#include "components/sync_driver/sync_util.h"
-#include "content/public/browser/browser_thread.h"
-#include "sync/util/get_session_name.h"
-#include "ui/base/device_form_factor.h"
-
-namespace browser_sync {
-
-namespace {
-
-#if defined(OS_ANDROID)
-bool IsTabletUI() {
-  return ui::GetDeviceFormFactor() == ui::DEVICE_FORM_FACTOR_TABLET;
-}
-#endif
-
-sync_pb::SyncEnums::DeviceType GetLocalDeviceType() {
-#if defined(OS_CHROMEOS)
-  return sync_pb::SyncEnums_DeviceType_TYPE_CROS;
-#elif defined(OS_LINUX)
-  return sync_pb::SyncEnums_DeviceType_TYPE_LINUX;
-#elif defined(OS_MACOSX)
-  return sync_pb::SyncEnums_DeviceType_TYPE_MAC;
-#elif defined(OS_WIN)
-  return sync_pb::SyncEnums_DeviceType_TYPE_WIN;
-#elif defined(OS_ANDROID)
-  return IsTabletUI() ? sync_pb::SyncEnums_DeviceType_TYPE_TABLET
-                      : sync_pb::SyncEnums_DeviceType_TYPE_PHONE;
-#else
-  return sync_pb::SyncEnums_DeviceType_TYPE_OTHER;
-#endif
-}
-
-}  // namespace
-
-LocalDeviceInfoProviderImpl::LocalDeviceInfoProviderImpl()
-    : weak_factory_(this) {
-}
-
-LocalDeviceInfoProviderImpl::~LocalDeviceInfoProviderImpl() {
-}
-
-const sync_driver::DeviceInfo*
-LocalDeviceInfoProviderImpl::GetLocalDeviceInfo() const {
-  return local_device_info_.get();
-}
-
-std::string LocalDeviceInfoProviderImpl::GetSyncUserAgent() const {
-#if !defined(OS_CHROMEOS) && !defined(OS_ANDROID)
-  return MakeDesktopUserAgentForSync(chrome::GetChannel());
-#elif defined(OS_CHROMEOS)
-  return MakeUserAgentForSync("CROS ", chrome::GetChannel());
-#elif defined(OS_ANDROID)
-  if (IsTabletUI()) {
-    return MakeUserAgentForSync("ANDROID-TABLET ", chrome::GetChannel());
-  } else {
-    return MakeUserAgentForSync("ANDROID-PHONE ", chrome::GetChannel());
-  }
-#endif
-}
-
-std::string LocalDeviceInfoProviderImpl::GetLocalSyncCacheGUID() const {
-  return cache_guid_;
-}
-
-scoped_ptr<sync_driver::LocalDeviceInfoProvider::Subscription>
-LocalDeviceInfoProviderImpl::RegisterOnInitializedCallback(
-    const base::Closure& callback) {
-  DCHECK(!local_device_info_.get());
-  return callback_list_.Add(callback);
-}
-
-void LocalDeviceInfoProviderImpl::Initialize(
-    const std::string& cache_guid, const std::string& signin_scoped_device_id) {
-  DCHECK(!cache_guid.empty());
-  cache_guid_ = cache_guid;
-
-  syncer::GetSessionName(
-      content::BrowserThread::GetBlockingPool(),
-      base::Bind(&LocalDeviceInfoProviderImpl::InitializeContinuation,
-                 weak_factory_.GetWeakPtr(),
-                 cache_guid,
-                 signin_scoped_device_id));
-}
-
-void LocalDeviceInfoProviderImpl::InitializeContinuation(
-    const std::string& guid,
-    const std::string& signin_scoped_device_id,
-    const std::string& session_name) {
-  local_device_info_.reset(
-      new sync_driver::DeviceInfo(guid,
-                                  session_name,
-                                  chrome::GetVersionString(),
-                                  GetSyncUserAgent(),
-                                  GetLocalDeviceType(),
-                                  signin_scoped_device_id));
-
-  // Notify observers.
-  callback_list_.Notify();
-}
-
-}  // namespace browser_sync