Using color filter when animating the drop target instead to TransitionDrawable

> No more flickering when crossfading between two bitmaps in small duration
> Allows us to control the color directly without depending on the assets

Change-Id: Ie7ed8bb94baf560e9b939cca624ed1bad457732c
diff --git a/src/com/android/launcher3/UninstallDropTarget.java b/src/com/android/launcher3/UninstallDropTarget.java
index 0fc8f32..4199390 100644
--- a/src/com/android/launcher3/UninstallDropTarget.java
+++ b/src/com/android/launcher3/UninstallDropTarget.java
@@ -28,7 +28,7 @@
         // Get the hover color
         mHoverColor = getResources().getColor(R.color.uninstall_target_hover_tint);
 
-        setDrawable(R.drawable.uninstall_target_selector);
+        setDrawable(R.drawable.ic_launcher_uninstall_normal);
     }
 
     @Override