[GCM] Fetching OAuth2 tokens periodically in account tracker

chrome/browser/services/gcm/gcm_account_tracker_unittest.cc

Index: chrome/browser/services/gcm/gcm_account_tracker_unittest.cc
diff --git a/chrome/browser/services/gcm/gcm_account_tracker_unittest.cc b/chrome/browser/services/gcm/gcm_account_tracker_unittest.cc
index d3911f022e6e58319955ad87312a288c0f92c085..a1e0f67e7affa0a09f126513a6e4fd8b4ce91b02 100644
--- a/chrome/browser/services/gcm/gcm_account_tracker_unittest.cc
+++ b/chrome/browser/services/gcm/gcm_account_tracker_unittest.cc
@@ -8,8 +8,7 @@
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
-#include "base/message_loop/message_loop.h"
-#include "base/run_loop.h"
+#include "chrome/test/base/testing_pref_service_syncable.h"
 #include "components/gcm_driver/fake_gcm_driver.h"
 #include "google_apis/gaia/fake_identity_provider.h"
 #include "google_apis/gaia/fake_oauth2_token_service.h"
@@ -170,6 +169,7 @@ class GCMAccountTrackerTest : public testing::Test {
   scoped_ptr<FakeOAuth2TokenService> fake_token_service_;
   scoped_ptr<FakeIdentityProvider> fake_identity_provider_;
   scoped_ptr<GCMAccountTracker> tracker_;
+  scoped_ptr<TestingPrefServiceSyncable> pref_service_;
 };
 
 GCMAccountTrackerTest::GCMAccountTrackerTest() {
@@ -183,7 +183,14 @@ GCMAccountTrackerTest::GCMAccountTrackerTest() {
                                new net::TestURLRequestContextGetter(
                                    message_loop_.message_loop_proxy())));
 
-  tracker_.reset(new GCMAccountTracker(gaia_account_tracker.Pass(), &driver_));
+  pref_service_.reset(new TestingPrefServiceSyncable);
+  pref_service_->registry()->RegisterInt64Pref(
+      "gcm.last_token_fetching_ts",
+      0L,
+      user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
+
+  tracker_.reset(new GCMAccountTracker(
+      gaia_account_tracker.Pass(), &driver_, pref_service_.get()));
 }
 
 GCMAccountTrackerTest::~GCMAccountTrackerTest() {