Change NavBar to transparent black

b/30615471

Change-Id: I7885e8a7fd63ee10c9b0107087046730e8acfde9

src/com/android/launcher3/allapps/AllAppsRecyclerView.java

@@ -28,6 +28,7 @@ import com.android.launcher3.BaseRecyclerView;
 import com.android.launcher3.BubbleTextView;
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.ItemInfo;
+import com.android.launcher3.Launcher;
 import com.android.launcher3.R;
 import com.android.launcher3.logging.UserEventDispatcher.LaunchSourceProvider;
 import com.android.launcher3.userevent.nano.LauncherLogProto;
@@ -423,6 +424,12 @@ public class AllAppsRecyclerView extends BaseRecyclerView
         return getPaddingTop() + y - offset;
     }
 
+    @Override
+    protected int getVisibleHeight() {
+        return super.getVisibleHeight()
+                - Launcher.getLauncher(getContext()).getDragLayer().getInsets().bottom;
+    }
+
     /**
      * Returns the available scroll height:
      *   AvailableScrollHeight = Total height of the all items - last page height