Implement DayNight theme for DocumentsUI

Also fixes tint colors for icons to use themed colorControlNormal.

Bug: 20421157
Change-Id: I110a1d95f763332e7ca76cf8ab4125bd4d9a075e
diff --git a/res/values/styles.xml b/res/values/styles.xml
index 39c958e..45dc20b 100644
--- a/res/values/styles.xml
+++ b/res/values/styles.xml
@@ -16,7 +16,7 @@
 
 <resources xmlns:android="http://schemas.android.com/apk/res/android">
 
-    <style name="DialogWhenReallyLarge" parent="@android:style/Theme.DeviceDefault.Light" />
+    <style name="DialogWhenReallyLarge" parent="@android:style/Theme.Material.DayNight.DarkActionBar" />
 
     <style name="DocumentsTheme" parent="@style/DialogWhenReallyLarge">
         <item name="android:actionBarWidgetTheme">@null</item>
@@ -43,10 +43,8 @@
         <item name="android:windowSoftInputMode">stateUnspecified|adjustUnspecified</item>
     </style>
 
-    <style name="StandaloneTheme" parent="android:Theme.DeviceDefault.Light">
+    <style name="StandaloneTheme" parent="@android:style/Theme.Material.DayNight.DarkActionBar">
         <item name="android:actionBarWidgetTheme">@null</item>
-        <item name="android:actionBarTheme">@*android:style/ThemeOverlay.Material.Dark.ActionBar</item>
-        <item name="android:actionBarPopupTheme">@*android:style/ThemeOverlay.Material.Light</item>
 
         <item name="android:colorPrimaryDark">@*android:color/material_blue_grey_900</item>
         <item name="android:colorPrimary">@*android:color/material_blue_grey_800</item>