Use SystemUpdateManager to provide system update info.

Change-Id: I38b631cda8aa63e478c74625eba3d18f9a5723bd
Fixes: 36874007
Test: robotests

tests/robotests/src/android/os/SystemUpdateManager.java

@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.os;
+
+/**
+ * Duplicate class for platform SystemUpdateManager to get around Robolectric sdk problem.
+ */
+public class SystemUpdateManager {
+
+    public static final String KEY_STATUS = "status";
+    public static final String KEY_TITLE = "title";
+
+    public static final int STATUS_UNKNOWN = 0;
+    public static final int STATUS_IDLE = 1;
+    public static final int STATUS_WAITING_DOWNLOAD = 2;
+    public static final int STATUS_IN_PROGRESS = 3;
+    public static final int STATUS_WAITING_INSTALL = 4;
+    public static final int STATUS_WAITING_REBOOT = 5;
+
+    public Bundle retrieveSystemUpdateInfo() {
+        return null;
+    }
+}