Add checking to find AppDirectedSmsProxy for App Directed SMS feature

Adding new system permission android.permission.CARRIER_FILTER_SMS

Bug: 18609762
Change-Id: I80a133653101cd4ec1793e726faf3601e2970224
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index 3fdaaa6..87b9971 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -363,6 +363,12 @@
         android:label="@string/permlab_receiveMms"
         android:description="@string/permdesc_receiveMms" />
 
+    <!-- Allows an application to filter carrier specific sms.
+         @hide -->
+    <permission android:name="android.permission.CARRIER_FILTER_SMS"
+        android:permissionGroup="android.permission-group.MESSAGES"
+        android:protectionLevel="signature|system" />
+
     <!-- @SystemApi Allows an application to receive emergency cell broadcast messages,
          to record or display them to the user.
          <p>Not for use by third-party applications.