Creating connections for conference event package participants.

- Add "addExistingConnection" method to connection service which provides
a way for a connection service to notify telecom of a pre-existing
connection (connections are normally created through telecom).
- Modify TelephonyConferenceController to retrieve its state from a
multiparty connection in the conference (in the case of IMS calls, this
would be the ImsCall that manages the conference) instead of just taking
the first one.

Bug: 18057361
Change-Id: I26993aec54ecb0ce90ae6983fd3eed9d8d0a5773
diff --git a/telecomm/java/android/telecom/ConnectionServiceAdapterServant.java b/telecomm/java/android/telecom/ConnectionServiceAdapterServant.java
index 217dbc3..519a400 100644
--- a/telecomm/java/android/telecom/ConnectionServiceAdapterServant.java
+++ b/telecomm/java/android/telecom/ConnectionServiceAdapterServant.java
@@ -57,6 +57,7 @@
     private static final int MSG_SET_ADDRESS = 18;
     private static final int MSG_SET_CALLER_DISPLAY_NAME = 19;
     private static final int MSG_SET_CONFERENCEABLE_CONNECTIONS = 20;
+    private static final int MSG_ADD_EXISTING_CONNECTION = 21;
 
     private final IConnectionServiceAdapter mDelegate;
 
@@ -199,6 +200,16 @@
                     }
                     break;
                 }
+                case MSG_ADD_EXISTING_CONNECTION: {
+                    SomeArgs args = (SomeArgs) msg.obj;
+                    try {
+                        mDelegate.addExistingConnection(
+                                (String) args.arg1, (ParcelableConnection) args.arg2);
+                    } finally {
+                        args.recycle();
+                    }
+                    break;
+                }
             }
         }
     };
@@ -345,6 +356,15 @@
             args.arg2 = conferenceableConnectionIds;
             mHandler.obtainMessage(MSG_SET_CONFERENCEABLE_CONNECTIONS, args).sendToTarget();
         }
+
+        @Override
+        public final void addExistingConnection(
+                String connectionId, ParcelableConnection connection) {
+            SomeArgs args = SomeArgs.obtain();
+            args.arg1 = connectionId;
+            args.arg2 = connection;
+            mHandler.obtainMessage(MSG_ADD_EXISTING_CONNECTION, args).sendToTarget();
+        }
     };
 
     public ConnectionServiceAdapterServant(IConnectionServiceAdapter delegate) {