Eliminate ash::internal namespace

ash/system/chromeos/session/logout_confirmation_controller_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 "ash/system/chromeos/session/logout_confirmation_controller.h"
 
 #include <queue>
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/compiler_specific.h"
 #include "base/location.h"
 #include "base/memory/ref_counted.h"
 #include "base/single_thread_task_runner.h"
 #include "base/thread_task_runner_handle.h"
 #include "base/time/tick_clock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // A SingleThreadTaskRunner that mocks the current time and allows it to be
 // fast-forwarded. TODO(bartfab): Copies of this class exist in several tests.
 // Consolidate them (crbug.com/329911).
 class MockTimeSingleThreadTaskRunner : public base::SingleThreadTaskRunner {
  public:
   MockTimeSingleThreadTaskRunner();
 
   // base::SingleThreadTaskRunner:
@@ skipping 248 matching lines @@
 
   controller_.ConfirmLogout(
       runner_->GetCurrentTime() + base::TimeDelta::FromSeconds(10));
   EXPECT_FALSE(log_out_called_);
   runner_->FastForwardBy(base::TimeDelta::FromSeconds(9));
   EXPECT_FALSE(log_out_called_);
   runner_->FastForwardBy(base::TimeDelta::FromSeconds(2));
   EXPECT_TRUE(log_out_called_);
 }
 
-}  // namespace internal
 }  // namespace ash