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

chrome/android/junit/src/org/chromium/chrome/browser/ChromeBackupAgentTest.java

Index: chrome/android/junit/src/org/chromium/chrome/browser/ChromeBackupAgentTest.java
diff --git a/chrome/android/junit/src/org/chromium/chrome/browser/ChromeBackupAgentTest.java b/chrome/android/junit/src/org/chromium/chrome/browser/ChromeBackupAgentTest.java
index f28848fd9dc3943c036d94e69f69ff40381c7f82..57cdb71e720bcfdbb207a600ebbf5b0161222dba 100644
--- a/chrome/android/junit/src/org/chromium/chrome/browser/ChromeBackupAgentTest.java
+++ b/chrome/android/junit/src/org/chromium/chrome/browser/ChromeBackupAgentTest.java
@@ -20,7 +20,7 @@
 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 java.io.ByteArrayInputStream;
@@ -46,7 +46,7 @@
         ChromeTestBackupAgent(byte[] mChromeInputPrefs) {
             // This is protected in ContextWrapper, so can only be called within a derived
             // class.
-            attachBaseContext(RuntimeEnvironment.application);
+            attachBaseContext(Robolectric.application);
             mInputStream = new ByteArrayInputStream(mChromeInputPrefs);
             mOutputStream = new ByteArrayOutputStream();
         }
@@ -79,9 +79,9 @@
 
     @Before
     public void setUp() throws Exception {
-        ContextUtils.initApplicationContextForTests(RuntimeEnvironment.application);
-        AccountManager manager = (AccountManager) RuntimeEnvironment.application.getSystemService(
-                Context.ACCOUNT_SERVICE);
+        ContextUtils.initApplicationContextForTests(Robolectric.application);
+        AccountManager manager =
+                (AccountManager) Robolectric.application.getSystemService(Context.ACCOUNT_SERVICE);
         manager.addAccountExplicitly(new Account("user1", "dummy"), null, null);
         manager.addAccountExplicitly(new Account("user2", "dummy"), null, null);
     }