Refactor syncable DEVICE_INFO type from ChangeProcessor to SyncableService - Part 2

chrome/browser/sync/glue/device_info_data_type_controller.cc

Index: chrome/browser/sync/glue/device_info_data_type_controller.cc
diff --git a/chrome/browser/sync/glue/device_info_data_type_controller.cc b/chrome/browser/sync/glue/device_info_data_type_controller.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a8deb06303777c1035f3ea6bd6e2718e1a2f8de6
--- /dev/null
+++ b/chrome/browser/sync/glue/device_info_data_type_controller.cc
@@ -0,0 +1,52 @@
+// 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 "chrome/browser/sync/glue/device_info_data_type_controller.h"
+
+#include "chrome/browser/sync/glue/chrome_report_unrecoverable_error.h"
+#include "chrome/browser/sync/glue/local_device_info_provider.h"
+#include "content/public/browser/browser_thread.h"
+
+using content::BrowserThread;
+
+namespace browser_sync {
+
+DeviceInfoDataTypeController::DeviceInfoDataTypeController(
+    sync_driver::SyncApiComponentFactory* sync_factory,
+    LocalDeviceInfoProvider* local_device_info_provider,
+    const DisableTypeCallback& disable_callback)
+    : UIDataTypeController(
+          BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI),
+          base::Bind(&ChromeReportUnrecoverableError),
+          disable_callback,
+          syncer::DEVICE_INFO,
+          sync_factory),
+      local_device_info_provider_(local_device_info_provider) {
+}
+
+DeviceInfoDataTypeController::~DeviceInfoDataTypeController() {
+}
+
+bool DeviceInfoDataTypeController::StartModels() {
+  // Start the data type as soon as the local device info gets available.
+  if (local_device_info_provider_->GetLocalDeviceInfo()) {
+    return true;
+  }
+
+  subscription_ = local_device_info_provider_->RegisterOnInitializedCallback(
+      base::Bind(&DeviceInfoDataTypeController::OnLocalDeviceInfoLoaded, this));
+
+  return false;
+}
+
+void DeviceInfoDataTypeController::OnLocalDeviceInfoLoaded() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK_EQ(state_, MODEL_STARTING);
+  DCHECK(local_device_info_provider_->GetLocalDeviceInfo());
+
+  subscription_.reset();
+  OnModelLoaded();
+}
+
+}  // namespace browser_sync