Remove calls to deprecated MessageLoop methods on Windows and Linux.

components/policy/core/common/cloud/cloud_policy_validator_unittest.cc

 // Copyright (c) 2012 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 "components/policy/core/common/cloud/cloud_policy_validator.h"
 
 #include <stdint.h>
 
 #include <memory>
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/message_loop/message_loop.h"
+#include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/string_util.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
 #include "components/policy/core/common/cloud/cloud_policy_constants.h"
 #include "components/policy/core/common/cloud/policy_builder.h"
 #include "components/policy/core/common/policy_switches.h"
 #include "crypto/rsa_private_key.h"
 #include "policy/proto/device_management_backend.pb.h"
 #include "testing/gmock/include/gmock/gmock.h"
@@ skipping 38 matching lines @@
     // Create a validator.
     std::unique_ptr<UserCloudPolicyValidator> validator =
         CreateValidator(std::move(policy_response));
 
     // Run validation and check the result.
     EXPECT_CALL(*this, ValidationCompletion(validator.get())).WillOnce(
         check_action);
     validator.release()->StartValidation(
         base::Bind(&CloudPolicyValidatorTest::ValidationCompletion,
                    base::Unretained(this)));
-    loop_.RunUntilIdle();
+    base::RunLoop().RunUntilIdle();
     Mock::VerifyAndClearExpectations(this);
   }
 
   std::unique_ptr<UserCloudPolicyValidator> CreateValidator(
       std::unique_ptr<em::PolicyFetchResponse> policy_response) {
     std::vector<uint8_t> public_key_bytes;
     EXPECT_TRUE(
         PolicyBuilder::CreateTestSigningKey()->ExportPublicKey(
             &public_key_bytes));
 
@@ skipping 299 matching lines @@
 
 TEST_F(CloudPolicyValidatorTest, NoRotation) {
   allow_key_rotation_ = false;
   policy_.UnsetNewSigningKey();
   Validate(CheckStatus(CloudPolicyValidatorBase::VALIDATION_OK));
 }
 
 }  // namespace
 
 }  // namespace policy