New theme for the dialtacts activity (no shadow/no title)

This brings the tabs and text dial in line with the UI mocks.
Note that it is still consistent with traditional UIs where
the title and notification bar are on the same z-index, it
is just that a tab activity's title is the active tab.

Bug 2104523
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 97dad56..68751db 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -62,7 +62,7 @@
         <!-- Tab container for TwelveKeyDialer and RecentCallsList -->
         <activity android:name="DialtactsActivity"
             android:label="@string/launcherDialer"
-            android:theme="@android:style/Theme.NoTitleBar"
+            android:theme="@style/DialtactsTheme"
             android:launchMode="singleTask"
             android:clearTaskOnLaunch="true"
             android:icon="@drawable/ic_launcher_phone"
diff --git a/res/values/styles.xml b/res/values/styles.xml
index ad44b34..05c0916 100644
--- a/res/values/styles.xml
+++ b/res/values/styles.xml
@@ -4,9 +4,9 @@
      Licensed under the Apache License, Version 2.0 (the "License");
      you may not use this file except in compliance with the License.
      You may obtain a copy of the License at
-  
+
           http://www.apache.org/licenses/LICENSE-2.0
-  
+
      Unless required by applicable law or agreed to in writing, software
      distributed under the License is distributed on an "AS IS" BASIS,
      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -15,6 +15,10 @@
 -->
 
 <resources>
+    <style name="DialtactsTheme" parent="@android:Theme">
+        <item name="android:windowNoTitle">true</item>
+        <item name="android:windowContentOverlay">@null</item>
+    </style>
 
     <style name="MinusButton">
         <item name="android:background">@drawable/btn_circle</item>