Resize and save custom wallpaper to large and small size

ash/desktop_background/desktop_background_controller.h

Index: ash/desktop_background/desktop_background_controller.h
diff --git a/ash/desktop_background/desktop_background_controller.h b/ash/desktop_background/desktop_background_controller.h
index 3d2c919d41e95bbbc943ff29d933c80b05a262ae..3815694ab62ed9ff5e8c5bdea26278871adf5c5c 100644
--- a/ash/desktop_background/desktop_background_controller.h
+++ b/ash/desktop_background/desktop_background_controller.h
@@ -24,6 +24,15 @@ class RootWindow;
 
 namespace ash {
 
+// The width and height of small/large resolution wallpaper. When screen size is
+// smaller than kSmallWallpaperMaxWidth and kSmallWallpaperMaxHeight, the small

[Ivan Korotkov, 2012/08/30 10:53:15]

vars in |...|

[bshe, 2012/08/30 16:39:02]

Done.

+// resolution wallpaper should be used. Otherwise, uses the large resolution
+// wallpaper.
+ASH_EXPORT extern const int kSmallWallpaperMaxWidth;
+ASH_EXPORT extern const int kSmallWallpaperMaxHeight;
+ASH_EXPORT extern const int kLargeWallpaperMaxWidth;
+ASH_EXPORT extern const int kLargeWallpaperMaxHeight;
+
 class UserWallpaperDelegate {
  public:
   virtual ~UserWallpaperDelegate() {}