More native work.

Implement save/restore of state, and add native APIs for
configuration information.

Change-Id: I2a3ddc2ba605db58d7c8b2b31b9215fb323f90b5
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index 82f822f..19b30cc 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -1275,6 +1275,9 @@
                 android:finishOnCloseSystemDialogs="true"
                 android:excludeFromRecents="true">
         </activity>
+        <activity android:name="com.android.internal.app.PlatLogoActivity"
+                android:theme="@style/Theme.NoTitleBar.Fullscreen">
+        </activity>
         <activity android:name="com.android.internal.app.DisableCarModeActivity"
                 android:theme="@style/Theme.NoDisplay"
                 android:excludeFromRecents="true">