Fix WebappDataStorage#updateDidLastWebApkUpdateRequestSucceed() corner cases

chrome/android/webapk/test/src/org/chromium/webapk/test/WebApkTestHelper.java

Index: chrome/android/webapk/test/src/org/chromium/webapk/test/WebApkTestHelper.java
diff --git a/chrome/android/webapk/test/src/org/chromium/webapk/test/WebApkTestHelper.java b/chrome/android/webapk/test/src/org/chromium/webapk/test/WebApkTestHelper.java
new file mode 100644
index 0000000000000000000000000000000000000000..dbaaf9e4348094a2795d312d7ec45120d8eb75af
--- /dev/null
+++ b/chrome/android/webapk/test/src/org/chromium/webapk/test/WebApkTestHelper.java
@@ -0,0 +1,41 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.webapk.test;
+
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageInfo;
+import android.os.Bundle;
+
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.res.builder.RobolectricPackageManager;
+
+/**
+ * Helper class for WebAPK JUnit tests.
+ */
+public class WebApkTestHelper {
+    /**
+     * Package name of the WebAPK registered by {@link #registerWebApkWithMetaData}.
+     */
+    public static String WEBAPK_PACKAGE_NAME = "org.chromium.webapk.test_package";
+
+    /**
+     * Registers WebAPK.
+     * @param metaData Bundle with meta data from WebAPK's Android Manifest.
+     */
+    public static void registerWebApkWithMetaData(Bundle metaData) {
+        RobolectricPackageManager packageManager =
+                (RobolectricPackageManager) RuntimeEnvironment.application.getPackageManager();
+        packageManager.addPackage(newPackageInfo(WEBAPK_PACKAGE_NAME, metaData));
+    }
+
+    private static PackageInfo newPackageInfo(String packageName, Bundle metaData) {
+        ApplicationInfo applicationInfo = new ApplicationInfo();
+        applicationInfo.metaData = metaData;
+        PackageInfo packageInfo = new PackageInfo();
+        packageInfo.packageName = packageName;
+        packageInfo.applicationInfo = applicationInfo;
+        return packageInfo;
+    }
+}