am aa8dc2ee: Removed mCallbackLooper from WallpaperService

        IWallpaperEngineWrapper(WallpaperService context,

                IWallpaperConnection conn, IBinder windowToken,

                int windowType, boolean isPreview, int reqWidth, int reqHeight) {

            if (DEBUG && mCallbackLooper != null) {

                mCallbackLooper.setMessageLogging(new LogPrinter(Log.VERBOSE, TAG));

            }

            mCaller = new HandlerCaller(context,

                    mCallbackLooper != null

                            ? mCallbackLooper : context.getMainLooper(),

                    this, true /*asyncHandler*/);

            mCaller = new HandlerCaller(context, context.getMainLooper(), this, true);

            mConnection = conn;

            mWindowToken = windowToken;

            mWindowType = windowType;