IMS: Add support in frameworks for call deflection feature

Call deflection feature is useful to deflect MT call to another
number.

Test: Manual

Bug: 62170348
Change-Id: Idfbcc175a856aa0bb9476f8c73d7a614a3af0700

telecomm/java/android/telecom/InCallAdapter.java

@@ -16,6 +16,7 @@
 
 package android.telecom;
 
+import android.net.Uri;
 import android.bluetooth.BluetoothDevice;
 import android.os.Bundle;
 import android.os.RemoteException;
@@ -60,6 +61,19 @@ public final class InCallAdapter {
         }
     }
 
+    /**
+     * Instructs Telecom to deflect the specified call.
+     *
+     * @param callId The identifier of the call to deflect.
+     * @param address The address to deflect.
+     */
+    public void deflectCall(String callId, Uri address) {
+        try {
+            mAdapter.deflectCall(callId, address);
+        } catch (RemoteException e) {
+        }
+    }
+
     /**
      * Instructs Telecom to reject the specified call.
      *