Eliminate ash::internal namespace

ash/display/display_error_observer_chromeos_unittest.cc

 // Copyright 2013 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/display/display_error_observer_chromeos.h"
 
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
 #include "grit/ash_strings.h"
 #include "ui/aura/window.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/views/controls/label.h"
 #include "ui/views/view.h"
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 
 class DisplayErrorObserverTest : public test::AshTestBase {
  protected:
   DisplayErrorObserverTest() {
   }
 
   virtual ~DisplayErrorObserverTest() {
   }
 
   virtual void SetUp() OVERRIDE {
@@ skipping 46 matching lines @@
   UpdateDisplay("200x200,300x300");
   observer()->OnDisplayModeChangeFailed(ui::OUTPUT_STATE_DUAL_MIRROR);
   EXPECT_EQ(l10n_util::GetStringUTF16(IDS_ASH_DISPLAY_FAILURE_ON_MIRRORING),
             GetMessageContents());
 
   observer()->OnDisplayModeChangeFailed(ui::OUTPUT_STATE_DUAL_EXTENDED);
   EXPECT_EQ(l10n_util::GetStringUTF16(IDS_ASH_DISPLAY_FAILURE_ON_NON_MIRRORING),
             GetMessageContents());
 }
 
-}  // namespace internal
 }  // namespace ash