Set a dark theme for SystemUI.

The default theme for the platform has changed to a
light variant. This puts SystemUI back in the dark.

Bug: 13635952
Change-Id: I230a2078ba6bf5a79c768f0e357fcbd75f283cf8
diff --git a/packages/SystemUI/AndroidManifest.xml b/packages/SystemUI/AndroidManifest.xml
index 14cc8ad..d371d70 100644
--- a/packages/SystemUI/AndroidManifest.xml
+++ b/packages/SystemUI/AndroidManifest.xml
@@ -110,7 +110,11 @@
         android:label="@string/app_label"
         android:icon="@*android:drawable/platlogo"
         android:process="com.android.systemui"
-        android:supportsRtl="true">
+        android:supportsRtl="true"
+        android:theme="@style/systemui_theme">
+        <!-- Keep theme in sync with SystemUIApplication.onCreate().
+             Setting the theme on the application does not affect views inflated by services.
+             The application theme is set again from onCreate to take effect for those views. -->
 
         <!-- Broadcast receiver that gets the broadcast at boot time and starts
              up everything else.