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

telecomm/java/android/telecom/ConnectionService.java

@@ -483,6 +483,13 @@ public abstract class ConnectionService extends Service {
             mAdapter.onPostDialWait(id, remaining);
         }
 
+        @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);