Update drop target styling based for BC.

Spec: https://docs.google.com/presentation/d/1UxdDh8EFhPbdRWRwzjbpgL-j02ew4Ew3eG3XBCeoYdo/edit#slide=id.vXfwHn8

Demo: https://drive.google.com/file/d/1ZIa3Dgo85vdVkfPm7aGJDyctZQR_c8Xx/view?usp=sharing

Test: manual
Bug: 184713740
Change-Id: I17dbbf1f7bbc40939cfc0fedb506a35f39ecc2e3
diff --git a/src/com/android/launcher3/SecondaryDropTarget.java b/src/com/android/launcher3/SecondaryDropTarget.java
index 858b72e..05cef38 100644
--- a/src/com/android/launcher3/SecondaryDropTarget.java
+++ b/src/com/android/launcher3/SecondaryDropTarget.java
@@ -108,13 +108,13 @@
         mCurrentAccessibilityAction = action;
 
         if (action == UNINSTALL) {
-            setDrawable(R.drawable.ic_uninstall_shadow);
+            setDrawable(R.drawable.ic_uninstall_no_shadow);
             updateText(R.string.uninstall_drop_target_label);
         } else if (action == DISMISS_PREDICTION) {
-            setDrawable(R.drawable.ic_block_shadow);
+            setDrawable(R.drawable.ic_block_no_shadow);
             updateText(R.string.dismiss_prediction_label);
         } else if (action == RECONFIGURE) {
-            setDrawable(R.drawable.ic_setup_shadow);
+            setDrawable(R.drawable.ic_setting);
             updateText(R.string.gadget_setup_text);
         }
     }