Removing some bitmap drawables.
Loading the edge drawables only when legacy DND is enabled

Change-Id: I1c66d03146fb7fa7d61a4abf8c2e5a4289a117b9
diff --git a/res/drawable/quantum_panel.xml b/res/drawable/quantum_panel.xml
index 1f4fb71..fda1003 100644
--- a/res/drawable/quantum_panel.xml
+++ b/res/drawable/quantum_panel.xml
@@ -14,5 +14,9 @@
      See the License for the specific language governing permissions and
      limitations under the License.
 -->
-<nine-patch xmlns:android="http://schemas.android.com/apk/res/android"
-    android:src="@drawable/quantum_panel_bitmap" />
+<inset xmlns:android="http://schemas.android.com/apk/res/android"
+       android:drawable="@drawable/quantum_panel_shape"
+       android:insetBottom="@dimen/quantum_panel_outer_padding"
+       android:insetLeft="@dimen/quantum_panel_outer_padding"
+       android:insetRight="@dimen/quantum_panel_outer_padding"
+       android:insetTop="@dimen/quantum_panel_outer_padding" />