Pass onPostDialChar call back from Telephony to Telecom.

Add plumbing to alert Telecom every time a character is processed after
the post dial wait state (the processing happens in Telephony).

Bug: 18644688
Change-Id: I487d76aa9c959ca528c6377374aa35c2d0b4a803
diff --git a/telecomm/java/android/telecom/RemoteConnectionService.java b/telecomm/java/android/telecom/RemoteConnectionService.java
index 906ecaa..073dcd5 100644
--- a/telecomm/java/android/telecom/RemoteConnectionService.java
+++ b/telecomm/java/android/telecom/RemoteConnectionService.java
@@ -223,6 +223,12 @@
         }
 
         @Override
+        public void onPostDialChar(String callId, char nextChar) {
+            findConnectionForAction(callId, "onPostDialChar")
+                    .onPostDialChar(nextChar);
+        }
+
+        @Override
         public void queryRemoteConnectionServices(RemoteServiceCallback callback) {
             // Not supported from remote connection service.
         }