Add GSM conference calling to simulator.

This CL adds a new item to the simulator menu:
  - Add GSM conference

The GSM conference action creates a conference with 5 phone calls.
Users can individually separate or kick calls out of the conference. Hanging up the second last call finishes the conference.

Bug: 67785540
Test: SimulatorConferenceTest
PiperOrigin-RevId: 172377631
Change-Id: Ic30fa6c65cf782247f75bcdd1ecbd86b1c16f143

1 files changed, 6 insertions, 5 deletions

diff --git a/java/com/android/dialer/simulator/impl/SimulatorVideoCall.java b/java/com/android/dialer/simulator/impl/SimulatorVideoCall.java
index 3f00ab183..f7256a11c 100644
--- a/java/com/android/dialer/simulator/impl/SimulatorVideoCall.java
+++ b/java/com/android/dialer/simulator/impl/SimulatorVideoCall.java
@@ -109,6 +109,10 @@ final class SimulatorVideoCall
     }
   }
 
+  @Override
+  public void onConference(
+      @NonNull SimulatorConnection connection1, @NonNull SimulatorConnection connection2) {}
+
   private boolean isVideoAccountEnabled() {
     SimulatorSimCallManager.register(context);
     return context
@@ -150,15 +154,12 @@ final class SimulatorVideoCall
       case Event.DISCONNECT:
         connection.setDisconnected(new DisconnectCause(DisconnectCause.LOCAL));
         break;
-      case Event.STATE_CHANGE:
-        break;
-      case Event.DTMF:
-        break;
       case Event.SESSION_MODIFY_REQUEST:
         ThreadUtil.postDelayedOnUiThread(() -> connection.handleSessionModifyRequest(event), 2000);
         break;
       default:
-        throw Assert.createIllegalStateFailException();
+        LogUtil.i("SimulatorVideoCall.onEvent", "unexpected event: " + event.type);
+        break;
     }
   }
 }