Eliminate ash::internal namespace

ash/desktop_background/wallpaper_resizer_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/desktop_background/wallpaper_resizer.h"
 
 #include "ash/desktop_background/wallpaper_resizer_observer.h"
 #include "base/message_loop/message_loop.h"
 #include "content/public/test/test_browser_thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 37 matching lines @@
   EXPECT_EQ(image.width(), kTargetWidth);
   EXPECT_EQ(image.height(), kTargetHeight);
   const SkBitmap* image_bitmap = image.bitmap();
   SkAutoLockPixels image_lock(*image_bitmap);
   return *image_bitmap->getAddr32(0, 0) == expect;
 }
 
 }  // namespace
 
 namespace ash {
-namespace internal {
 
 class WallpaperResizerTest : public testing::Test,
                              public WallpaperResizerObserver {
  public:
   WallpaperResizerTest()
       : ui_thread_(content::BrowserThread::UI, &message_loop_) {
   }
   virtual ~WallpaperResizerTest() {}
 
   gfx::ImageSkia Resize(const gfx::ImageSkia& image,
@@ skipping 80 matching lines @@
   // both pre- and post-resize that matches the ID returned by GetImageId().
   WallpaperResizer resizer(image, gfx::Size(10, 20), WALLPAPER_LAYOUT_STRETCH);
   EXPECT_EQ(WallpaperResizer::GetImageId(image), resizer.original_image_id());
   resizer.AddObserver(this);
   resizer.StartResize();
   WaitForResize();
   resizer.RemoveObserver(this);
   EXPECT_EQ(WallpaperResizer::GetImageId(image), resizer.original_image_id());
 }
 
-}  // namespace internal
 }  // namespace ash