Eliminate ash::internal namespace

ash/wm/workspace/phantom_window_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/wm/workspace/phantom_window_controller.h"
 
 #include "ash/ash_switches.h"
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
 #include "base/command_line.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/aura/window_observer.h"
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // Returns true if |window| is non-NULL and is visible.
 bool IsVisible(aura::Window* window) {
   return window && window->IsVisible();
 }
 
 // Observes |window|'s deletion.
 class WindowDeletionObserver : public aura::WindowObserver {
  public:
@@ skipping 136 matching lines @@
   // Destroy phantom controller. Both windows should close.
   WindowDeletionObserver target_deletion_observer(
       phantom_window_in_target_root());
   WindowDeletionObserver start_deletion_observer(
       phantom_window_in_start_root());
   DeleteController();
   EXPECT_FALSE(target_deletion_observer.IsWindowAlive());
   EXPECT_FALSE(start_deletion_observer.IsWindowAlive());
 }
 
-}  // namespace internal
 }  // namespace ash