am 1abd4cc7: am be5e6429: Switch BackgroundOnlyTheme from Holo to Material

* commit '1abd4cc74888d1aa73b6434802a995c08d0be1f6':
  Switch BackgroundOnlyTheme from Holo to Material
diff --git a/res-common/values/styles.xml b/res-common/values/styles.xml
index 54d5f8c..802b8b7 100644
--- a/res-common/values/styles.xml
+++ b/res-common/values/styles.xml
@@ -78,7 +78,7 @@
         <item name="android:layout_height">match_parent</item>
     </style>
 
-    <style name="BackgroundOnlyTheme" parent="@android:style/Theme.Holo.Light">
+    <style name="BackgroundOnlyTheme" parent="@android:style/Theme.Material.Light">
         <item name="android:windowBackground">@null</item>
         <item name="android:windowContentOverlay">@null</item>
         <item name="android:windowAnimationStyle">@null</item>