[Android] Update all Robolectric tests to Robolectric 3.0

chrome/android/junit/src/org/chromium/chrome/browser/offlinepages/OfflinePageTestRunner.java

+// 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.chrome.browser.offlinepages;
+
+import org.chromium.testing.local.LocalRobolectricTestRunner;
+import org.junit.runners.model.InitializationError;
+import org.robolectric.internal.bytecode.InstrumentationConfiguration;
+
+/**
+ * Custom Robolectric test runner that instruments the com.google.android.gms.gcm package
+ * so Shadows of those classes can be created.
+ */
+public class OfflinePageTestRunner extends LocalRobolectricTestRunner {
+
+    /**
+     * OfflinePageTestRunner constructor
+     */
+    public OfflinePageTestRunner(Class<?> testClass) throws InitializationError {
+        super(testClass);
+    }
+
+    @Override
+    public InstrumentationConfiguration createClassLoaderConfig() {
+        InstrumentationConfiguration.Builder builder = InstrumentationConfiguration.newBuilder();
+        builder.addInstrumentedPackage("com.google.android.gms.gcm");
+        return builder.build();
+    }
+}