Make image wallpaper use a big surface.

Change-Id: I119f2bfee5fde08040520bd0da8574194a893ab5

core/java/android/service/wallpaper/WallpaperService.java

@@ -204,12 +204,6 @@ public abstract class WallpaperService extends Service {
                 return mIsCreating;
             }
 
-            @Override
-            public void setFixedSize(int width, int height) {
-                throw new UnsupportedOperationException(
-                        "Wallpapers currently only support sizing from layout");
-            }
-            
             public void setKeepScreenOn(boolean screenOn) {
                 throw new UnsupportedOperationException(
                         "Wallpapers do not support keep screen on");

core/java/com/android/internal/service/wallpaper/ImageWallpaper.java

@@ -117,7 +117,11 @@ public class ImageWallpaper extends WallpaperService {
             synchronized (mLock) {
                 updateWallpaperLocked();
             }
-            surfaceHolder.setSizeFromLayout();
+            surfaceHolder.setFixedSize(getDesiredMinimumWidth(), getDesiredMinimumHeight());
+            // Used a fixed size surface, because we are special.  We can do
+            // this because we know the current design of window animations doesn't
+            // cause this to break.
+            //surfaceHolder.setSizeFromLayout();
         }
 
         @Override