Merge "Yell when no home app was found." into nyc-dev

am: dba83f1289

* commit 'dba83f128999708d15a3172cdfaf0b596e4e7048':
  Yell when no home app was found.

Change-Id: I34e9253173c304c2c5d2de6718cb8dc35c255a63

services/core/java/com/android/server/am/ActivityManagerService.java

@@ -3789,6 +3789,8 @@ public final class ActivityManagerService extends ActivityManagerNative
                 intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK);
                 mActivityStarter.startHomeActivityLocked(intent, aInfo, reason);
             }
+        } else {
+            Slog.wtf(TAG, "No home screen found for " + intent, new Throwable());
         }
 
         return true;