Add voicemail settings activity and fragment.

These are just stubs for now; in subsequent CLs, I will move the
settings/logic from CallFeatureSettings to these files.

Removed the comment in PhoneAccountSettingsActivity; the current
vision is that the activity will remain. This is particularly
useful because on Multi-SIM phones, we will want to be able to
launch phone accounts directly with an intent.

Bug: 17019623
Change-Id: Ie3f4aeca848f348e0e38af3dbd8bce0bd9f97667
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index c086376..61eaa2c 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -542,6 +542,11 @@
             </intent-filter>
         </activity>
 
+        <activity android:name="com.android.phone.settings.VoicemailSettingsActivity"
+            android:label="@string/voicemail"
+            android:theme="@style/DialerSettingsLight">
+        </activity>
+
         <!-- BroadcastReceiver for receiving Intents from Notification mechanism. -->
         <receiver android:name="PhoneGlobals$NotificationBroadcastReceiver" android:exported="false">
             <intent-filter>