Add preview layout for lockscreen phone affordance

With the new interaction to launch the phone from the lockscreen, Dialer needs
to provide a static layout which looks as close as possible to the screen after
Dialer is fully loaded.

Bug: 15126905
Change-Id: Ide1a54833ed00a9e8854408d7cb872d33633b6e5
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 9b39844..7532763 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -120,6 +120,9 @@
                 <category android:name="android.intent.category.DEFAULT" />
                 <category android:name="android.intent.category.TAB" />
             </intent-filter>
+            <meta-data
+                android:name="com.android.keyguard.layout"
+                android:resource="@layout/keyguard_preview" />
         </activity>
 
         <activity android:name="com.android.dialer.settings.DialerSettingsActivity"