Enable user change background image in settings page in Aura build.

ash/desktop_background/desktop_background_resources.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/desktop_background/desktop_background_resources.h"
+
+#include "base/logging.h"
+#include "grit/ui_resources.h"
+#include "ui/base/resource/resource_bundle.h"
+#include "ui/gfx/image/image.h"
+#include "third_party/skia/include/core/SkBitmap.h"
+
+namespace ash {
+
+namespace internal {

[flackr, 2012/03/08 01:19:59]

You can remove name from namespace:
namespace {

Also, move this namespace block before the namespace ash {.

[bshe, 2012/03/08 03:19:24]

Done.

+  const int kDefaultWallpaperResources[] = {
+    IDR_AURA_WALLPAPER_1,
+    IDR_AURA_WALLPAPER_2,
+    IDR_AURA_WALLPAPER_3,
+    IDR_AURA_WALLPAPER_4,
+    IDR_AURA_WALLPAPER_5,
+    IDR_AURA_WALLPAPER_6,
+    IDR_AURA_WALLPAPER_7,
+    IDR_AURA_WALLPAPER_8,
+    IDR_AURA_WALLPAPER_9,
+  };
+
+  const int kDefaultWallpaperResourcesThumb[] = {
+    IDR_AURA_WALLPAPER_1_THUMB,
+    IDR_AURA_WALLPAPER_2_THUMB,
+    IDR_AURA_WALLPAPER_3_THUMB,
+    IDR_AURA_WALLPAPER_4_THUMB,
+    IDR_AURA_WALLPAPER_5_THUMB,
+    IDR_AURA_WALLPAPER_6_THUMB,
+    IDR_AURA_WALLPAPER_7_THUMB,
+    IDR_AURA_WALLPAPER_8_THUMB,
+    IDR_AURA_WALLPAPER_9_THUMB,
+  };
+
+  const int kDefaultWallpaperCount = arraysize(kDefaultWallpaperResources);
+
+  const int kPresetWallpaperIndex = 0;
+}

[flackr, 2012/03/08 01:19:59]

}  // namespace

[bshe, 2012/03/08 03:19:24]

Done.

+
+int GetPresetWallpaperIndex() {
+  return internal::kPresetWallpaperIndex;
+}
+
+int GetWallpaperCount() {
+  return internal::kDefaultWallpaperCount;
+}
+
+const SkBitmap& GetDefaultWallpaper(int index) {
+  DCHECK(index >= 0 && index < internal::kDefaultWallpaperCount);
+  return *ui::ResourceBundle::GetSharedInstance().GetImageNamed(
+      internal::kDefaultWallpaperResources[index]).ToSkBitmap();
+}
+
+const SkBitmap& GetDefaultWallpaperThumbnail(int index) {
+  DCHECK(index >= 0 && index < internal::kDefaultWallpaperCount);
+  return *ui::ResourceBundle::GetSharedInstance().GetImageNamed(
+      internal::kDefaultWallpaperResourcesThumb[index]).ToSkBitmap();
+}
+
+}  // namespace ash