Remove calls to deprecated MessageLoop methods in chrome.

chrome/browser/policy/cloud/cloud_policy_invalidator_unittest.cc

 // Copyright 2013 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.
 
 #include "chrome/browser/policy/cloud/cloud_policy_invalidator.h"
 
 #include <stdint.h>
 
 #include <memory>
 #include <string>
@@ skipping 352 matching lines @@
 
 bool CloudPolicyInvalidatorTest::InvalidationsEnabled() {
   return core_.refresh_scheduler()->invalidations_available();
 }
 
 bool CloudPolicyInvalidatorTest::IsInvalidationAcknowledged(
     const syncer::Invalidation& invalidation) {
   // The acknowledgement task is run through a WeakHandle that posts back to our
   // own thread.  We need to run any posted tasks before we can check
   // acknowledgement status.
-  loop_.RunUntilIdle();
+  base::RunLoop().RunUntilIdle();
 
   EXPECT_FALSE(IsUnsent(invalidation));
   return !invalidation_service_.GetMockAckHandler()->IsUnacked(invalidation);
 }
 
 bool CloudPolicyInvalidatorTest::IsInvalidatorRegistered() {
   return !invalidation_service_.invalidator_registrar()
       .GetRegisteredIds(invalidator_.get()).empty();
 }
 
@@ skipping 711 matching lines @@
     CloudPolicyInvalidatorUserTypedTest,
     testing::Values(em::DeviceRegisterRequest::ANDROID_BROWSER));
 #else
 INSTANTIATE_TEST_CASE_P(
     CloudPolicyInvalidatorUserTypedTestInstance,
     CloudPolicyInvalidatorUserTypedTest,
     testing::Values(em::DeviceRegisterRequest::BROWSER));
 #endif
 
 }  // namespace policy