Add a log when initializing OverviewProxy

Test: local logs
Bug: 210426498
Change-Id: I373499e7f1dae23e404e153687ecf90e62160cb9

packages/SystemUI/src/com/android/systemui/recents/OverviewProxyService.java

@@ -507,6 +507,7 @@ public class OverviewProxyService extends CurrentUserTracker implements
                     backAnimation.createExternalInterface().asBinder()));
 
             try {
+                Log.d(TAG_OPS, "OverviewProxyService connected, initializing overview proxy");
                 mOverviewProxy.onInitialize(params);
             } catch (RemoteException e) {
                 mCurrentBoundedUserId = -1;