IMS: Adding ims on/off interface files and callback for enabled/disabled features.

Change-Id: I4e0049d605d9e7d13035c43e2504cdfb67a7a102

telephony/java/com/android/ims/internal/IImsRegistrationListener.aidl

@@ -55,4 +55,15 @@ interface IImsRegistrationListener {
      *    Else ({@code event} is 1), meaning the specified service is added to the IMS connection.
      */
     void registrationServiceCapabilityChanged(int serviceClass, int event);
+
+    /**
+     * Notifies the application when features on a particular service enabled or
+     * disabled successfully based on user preferences.
+     *
+     * @param serviceClass a service class specified in {@link ImsServiceClass}
+     * @param enabledFeatures features enabled as defined in com.android.ims.ImsConfig#FeatureConstants.
+     * @param disabledFeatures features disabled as defined in com.android.ims.ImsConfig#FeatureConstants.
+     */
+    void registrationFeatureCapabilityChanged(int serviceClass,
+            out int[] enabledFeatures, out int[] disabledFeatures);
 }

telephony/java/com/android/ims/internal/IImsService.aidl

@@ -51,4 +51,15 @@ interface IImsService {
      * Config interface to get/set IMS service/capability parameters.
      */
     IImsConfig getConfigInterface();
+
+    /**
+     * Used for turning on IMS when its in OFF state.
+     */
+    void turnOnIms();
+
+    /**
+     * Used for turning off IMS when its in ON state.
+     * When IMS is OFF, device will behave as CSFB'ed.
+     */
+    void turnOffIms();
 }