Fix UserManager#isUserAGoat

Correctly detect if the user is a goat.

Change-Id: I78577dd7ec8c3685434ee03560010a6ea4db127f

core/java/android/os/UserManager.java

diff --git a/core/java/android/os/UserManager.java b/core/java/android/os/UserManager.java
index c25278f..82016c3 100644
--- a/core/java/android/os/UserManager.java
+++ b/core/java/android/os/UserManager.java
@@ -19,6 +19,7 @@
 import android.app.ActivityManager;
 import android.app.ActivityManagerNative;
 import android.content.Context;
+import android.content.pm.PackageManager;
 import android.content.pm.UserInfo;
 import android.content.res.Resources;
 import android.graphics.Bitmap;
@@ -430,7 +431,8 @@
      * @return whether the user making this call is a goat
      */
     public boolean isUserAGoat() {
-        return false;
+        return mContext.getPackageManager()
+                .isPackageAvailable("com.coffeestainstudios.goatsimulator");
     }
 
     /**