[Offline pages] Ensuring obtaining GcmNetworkManager in BackgroundScheduler does not throw

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

Index: chrome/android/junit/src/org/chromium/chrome/browser/offlinepages/OfflinePageTestRunner.java
diff --git a/chrome/android/junit/src/org/chromium/chrome/browser/offlinepages/OfflinePageTestRunner.java b/chrome/android/junit/src/org/chromium/chrome/browser/offlinepages/OfflinePageTestRunner.java
index bf13eb12fab9aeff18914b2ac79f8cacf538f1ce..177b96299f2c2ebcdeff7fe69d0b66bbc5dea35d 100644
--- a/chrome/android/junit/src/org/chromium/chrome/browser/offlinepages/OfflinePageTestRunner.java
+++ b/chrome/android/junit/src/org/chromium/chrome/browser/offlinepages/OfflinePageTestRunner.java
@@ -4,10 +4,11 @@
 
 package org.chromium.chrome.browser.offlinepages;
 
-import org.chromium.testing.local.LocalRobolectricTestRunner;
 import org.junit.runners.model.InitializationError;
 import org.robolectric.internal.bytecode.InstrumentationConfiguration;
 
+import org.chromium.testing.local.LocalRobolectricTestRunner;
+
 /**
  * Custom Robolectric test runner that instruments the com.google.android.gms.gcm package
  * so Shadows of those classes can be created.
@@ -24,6 +25,7 @@ public class OfflinePageTestRunner extends LocalRobolectricTestRunner {
     @Override
     public InstrumentationConfiguration createClassLoaderConfig() {
         InstrumentationConfiguration.Builder builder = InstrumentationConfiguration.newBuilder();
+        builder.addInstrumentedPackage("com.google.android.gms.common");
         builder.addInstrumentedPackage("com.google.android.gms.gcm");
         return builder.build();
     }