Eliminate ash::internal namespace

ash/wm/video_detector.cc

 // Copyright (c) 2012 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/video_detector.h"
 
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/wm/window_state.h"
 #include "ui/aura/env.h"
@@ skipping 113 matching lines @@
     return;
 
   // As a relatively-cheap way to avoid flipping back and forth between
   // fullscreen and non-fullscreen notifications when one video is playing in a
   // fullscreen window and a second video is playing in a non-fullscreen window,
   // report fullscreen video whenever a fullscreen window exists on any desktop
   // regardless of whether the video is actually playing in that window:
   // http://crbug.com/340666
   bool fullscreen_window_exists = false;
   std::vector<aura::Window*> containers =
-      Shell::GetContainersFromAllRootWindows(
-          internal::kShellWindowId_DefaultContainer, NULL);
+      Shell::GetContainersFromAllRootWindows(kShellWindowId_DefaultContainer,
+                                             NULL);
   for (std::vector<aura::Window*>::const_iterator container =
        containers.begin(); container != containers.end(); ++container) {
     const aura::Window::Windows& windows = (*container)->children();
     for (aura::Window::Windows::const_iterator window = windows.begin();
          window != windows.end(); ++window) {
       if (wm::GetWindowState(*window)->IsFullscreen()) {
         fullscreen_window_exists = true;
         break;
       }
     }
   }
 
   FOR_EACH_OBSERVER(VideoDetectorObserver,
                     observers_,
                     OnVideoDetected(fullscreen_window_exists));
   last_observer_notification_time_ = now;
 }
 
 }  // namespace ash