Intorduce PowerButtonObserver API

athena/input/accelerator_manager_unittest.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/input/public/accelerator_manager.h"
 
 #include "athena/input/public/input_manager.h"
 #include "athena/test/base/athena_test_base.h"
 #include "ui/events/test/event_generator.h"
 
@@ skipping 25 matching lines @@
     fired_command_id_ = command_id;
     return true;
   }
 
   int fired_command_id_;
   bool enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(TestHandler);
 };
 
-}  // namespace athena
+}  // namespace
 
 typedef test::AthenaTestBase InputManagerTest;
 
 TEST_F(InputManagerTest, Basic) {
   enum TestCommandId {
     COMMAND_A,
     COMMAND_B,
     COMMAND_C,
     COMMAND_D,
     COMMAND_E,
@@ skipping 53 matching lines @@
   generator.PressKey(ui::VKEY_D, ui::EF_SHIFT_DOWN | ui::EF_IS_REPEAT);
   EXPECT_EQ(kInvalidCommandId, test_handler.GetFiredCommandIdAndReset());
 
   // TODO(oshima): Add scenario where the key event is consumed by
   // an app.
   generator.PressKey(ui::VKEY_E, ui::EF_SHIFT_DOWN);
   EXPECT_EQ(COMMAND_E, test_handler.GetFiredCommandIdAndReset());
 }
 
 }  // namespace athena