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/ConnectionService.java b/telecomm/java/android/telecom/ConnectionService.java
index d0a8aee..df16375 100644
--- a/telecomm/java/android/telecom/ConnectionService.java
+++ b/telecomm/java/android/telecom/ConnectionService.java
@@ -484,6 +484,13 @@
         }
 
         @Override
+        public void onPostDialChar(Connection c, char nextChar) {
+            String id = mIdByConnection.get(c);
+            Log.d(this, "Adapter onPostDialChar %s, %s", c, nextChar);
+            mAdapter.onPostDialChar(id, nextChar);
+        }
+
+        @Override
         public void onRingbackRequested(Connection c, boolean ringback) {
             String id = mIdByConnection.get(c);
             Log.d(this, "Adapter onRingback %b", ringback);