Removing some synthetic method creation

> Make package-private and @Thunk all private methods and constructors accessed from inner classes.

Change-Id: Ie5913860a0c33e48e9bf68f9b5b1699f64c2f174
diff --git a/src/com/android/launcher3/ButtonDropTarget.java b/src/com/android/launcher3/ButtonDropTarget.java
index 4cd28c0..09a71b0 100644
--- a/src/com/android/launcher3/ButtonDropTarget.java
+++ b/src/com/android/launcher3/ButtonDropTarget.java
@@ -64,7 +64,7 @@
     protected Drawable mDrawable;
 
     private AnimatorSet mCurrentColorAnim;
-    private ColorMatrix mSrcFilter, mDstFilter, mCurrentFilter;
+    @Thunk ColorMatrix mSrcFilter, mDstFilter, mCurrentFilter;
 
 
     public ButtonDropTarget(Context context, AttributeSet attrs) {