Send live wallpaper taps.

Change-Id: I25465e6fa7a69ef5c35e69ddc375e65797f44bc6
diff --git a/src/com/android/launcher2/CellLayout.java b/src/com/android/launcher2/CellLayout.java
index 023e9f4..8fe489d 100644
--- a/src/com/android/launcher2/CellLayout.java
+++ b/src/com/android/launcher2/CellLayout.java
@@ -796,7 +796,8 @@
 
                     final int[] cellXY = mTmpCellXY;
                     getLocationOnScreen(cellXY);
-                    mWallpaperManager.sendWallpaperCommand(getWindowToken(), "android.home.drop",
+                    mWallpaperManager.sendWallpaperCommand(getWindowToken(),
+                            WallpaperManager.COMMAND_DROP,
                             cellXY[0] + childLeft + lp.width / 2,
                             cellXY[1] + childTop + lp.height / 2, 0, null);