[Athena] Add status icons and system time to the desktop background

athena/system/system_ui_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 "athena/system/public/system_ui.h"
 
 #include "athena/system/device_socket_listener.h"
 #include "athena/system/orientation_controller.h"
 #include "athena/system/power_button_controller.h"
+#include "athena/system/status_icon_container_view.h"
+#include "athena/system/time_view.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 
 namespace athena {
 namespace {
 
 SystemUI* instance = NULL;
 
 class SystemUIImpl : public SystemUI {
  public:
   SystemUIImpl(scoped_refptr<base::TaskRunner> io_task_runner)
       : orientation_controller_(new OrientationController()),
         power_button_controller_(new PowerButtonController) {
     orientation_controller_->InitWith(io_task_runner);
   }
 
   virtual ~SystemUIImpl() {
   }
 
+  virtual views::View* CreateTimeView() OVERRIDE {
+    return new TimeView;
+  }
+
+  virtual views::View* CreateStatusIconView(
+      aura::Window* popup_container) OVERRIDE {
+    return new StatusIconContainerView(popup_container);
+  }
+
  private:
   scoped_refptr<OrientationController> orientation_controller_;
   scoped_ptr<PowerButtonController> power_button_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemUIImpl);
 };
 
 }  // namespace
 
 // static
+SystemUI* SystemUI::Get() {
+  return instance;

[sadrul, 2014/08/21 18:44:30]

DCHECK(instance) (that would be consistent with the other athena modules)

+}
+
 SystemUI* SystemUI::Create(
     scoped_refptr<base::TaskRunner> io_task_runner) {
   DeviceSocketListener::CreateSocketManager(io_task_runner);
   instance = new SystemUIImpl(io_task_runner);
   return instance;
 }
 
 // static
 void SystemUI::Shutdown() {
   CHECK(instance);
   delete instance;
   instance = NULL;
   DeviceSocketListener::ShutdownSocketManager();
 }
 
 }  // namespace athena