Removing ghost activity title from the NonPhoneActivity dialog

Bug: 3405780
Change-Id: I47ab5e2b92c4a95e82850be5784a345b18b5dda4
diff --git a/res/values/styles.xml b/res/values/styles.xml
index bba6e5b..db50204 100644
--- a/res/values/styles.xml
+++ b/res/values/styles.xml
@@ -197,7 +197,10 @@
         <item name="android:background">@drawable/directory_bg</item>
     </style>
 
-    <style name="NonPhoneActivityTheme" parent="@android:Theme.Dialog">
+    <style name="NonPhoneActivityTheme" parent="@android:Theme.Translucent">
+    </style>
+
+    <style name="NonPhoneDialogTheme" parent="@android:Theme.Dialog">
     </style>
 
     <style name="SectionDivider">