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/ConnectionServiceAdapter.java

@@ -226,6 +226,15 @@ final class ConnectionServiceAdapter implements DeathRecipient {
         }
     }
 
+    void onPostDialChar(String callId, char nextChar) {
+        for (IConnectionServiceAdapter adapter : mAdapters) {
+            try {
+                adapter.onPostDialChar(callId, nextChar);
+            } catch (RemoteException ignored) {
+            }
+        }
+    }
+
     /**
      * Indicates that a new conference call has been created.
      *