Revert of [Android] Update all Robolectric tests to Robolectric 3.0

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

Index: chrome/android/junit/src/org/chromium/chrome/browser/offlinepages/BackgroundSchedulerTest.java
diff --git a/chrome/android/junit/src/org/chromium/chrome/browser/offlinepages/BackgroundSchedulerTest.java b/chrome/android/junit/src/org/chromium/chrome/browser/offlinepages/BackgroundSchedulerTest.java
index 2e8ab62e6f68b9e26841fb87b3ef69977bfb8bd0..d17b2185d8435a8ea1dd574ad633d9bf836ec16f 100644
--- a/chrome/android/junit/src/org/chromium/chrome/browser/offlinepages/BackgroundSchedulerTest.java
+++ b/chrome/android/junit/src/org/chromium/chrome/browser/offlinepages/BackgroundSchedulerTest.java
@@ -11,22 +11,21 @@
 
 import android.content.Context;
 
-import com.google.android.gms.gcm.GcmNetworkManager;
 import com.google.android.gms.gcm.Task;
 
 import org.chromium.base.BaseChromiumApplication;
 import org.chromium.base.test.util.Feature;
+import org.chromium.testing.local.LocalRobolectricTestRunner;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
-import org.robolectric.RuntimeEnvironment;
+import org.robolectric.Robolectric;
 import org.robolectric.annotation.Config;
-import org.robolectric.internal.ShadowExtractor;
 
 /**
  * Unit tests for BackgroundScheduler.
  */
-@RunWith(OfflinePageTestRunner.class)
+@RunWith(LocalRobolectricTestRunner.class)
 @Config(manifest = Config.NONE,
         application = BaseChromiumApplication.class,
         shadows = {ShadowGcmNetworkManager.class})
@@ -34,27 +33,24 @@
     private Context mContext;
     private TriggerConditions mConditions1 = new TriggerConditions(
             true /* power */, 10 /* battery percentage */, false /* unmetered */);
-    private ShadowGcmNetworkManager mGcmNetworkManager;
 
     @Before
     public void setUp() throws Exception {
-        mContext =  RuntimeEnvironment.application;
-        mGcmNetworkManager = (ShadowGcmNetworkManager) ShadowExtractor.extract(
-                GcmNetworkManager.getInstance(mContext));
-        mGcmNetworkManager.clear();
+        mContext =  Robolectric.application;
+        ShadowGcmNetworkManager.clear();
     }
 
     @Test
     @Feature({"OfflinePages"})
     public void testSchedule() {
         BackgroundScheduler scheduler = new BackgroundScheduler();
-        assertNull(mGcmNetworkManager.getScheduledTask());
+        assertNull(ShadowGcmNetworkManager.getScheduledTask());
         scheduler.schedule(mContext, mConditions1);
         // Check with gcmNetworkManagerShadow that schedule got called.
-        assertNotNull(mGcmNetworkManager.getScheduledTask());
+        assertNotNull(ShadowGcmNetworkManager.getScheduledTask());
 
         // Verify details of the scheduled task.
-        Task task = mGcmNetworkManager.getScheduledTask();
+        Task task = ShadowGcmNetworkManager.getScheduledTask();
         assertEquals(OfflinePageUtils.TASK_TAG, task.getTag());
         long scheduledTimeMillis = TaskExtrasPacker.unpackTimeFromBundle(task.getExtras());
         assertTrue(scheduledTimeMillis > 0L);
@@ -66,12 +62,12 @@
     @Feature({"OfflinePages"})
     public void testUnschedule() {
         BackgroundScheduler scheduler = new BackgroundScheduler();
-        assertNull(mGcmNetworkManager.getScheduledTask());
+        assertNull(ShadowGcmNetworkManager.getScheduledTask());
         scheduler.schedule(mContext, mConditions1);
-        assertNotNull(mGcmNetworkManager.getScheduledTask());
+        assertNotNull(ShadowGcmNetworkManager.getScheduledTask());
 
-        assertNull(mGcmNetworkManager.getCanceledTask());
+        assertNull(ShadowGcmNetworkManager.getCanceledTask());
         scheduler.unschedule(mContext);
-        assertNotNull(mGcmNetworkManager.getCanceledTask());
+        assertNotNull(ShadowGcmNetworkManager.getCanceledTask());
     }
 }