Convert JsonWriter::Write to taking a const ref for the in-param

chrome/browser/chromeos/policy/cloud_external_data_policy_observer_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/chromeos/policy/cloud_external_data_policy_observer.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/files/file_path.h"
@@ skipping 64 matching lines @@
 void ConstructAvatarPolicy(const std::string& file_name,
                            const std::string& url,
                            std::string* policy_data,
                            std::string* policy) {
   base::FilePath test_data_dir;
   ASSERT_TRUE(PathService::Get(chrome::DIR_TEST_DATA, &test_data_dir));
   ASSERT_TRUE(base::ReadFileToString(
       test_data_dir.Append("chromeos").Append(file_name),
       policy_data));
   base::JSONWriter::Write(
-      test::ConstructExternalDataReference(url, *policy_data).get(),
-      policy);
+      *test::ConstructExternalDataReference(url, *policy_data), policy);
 }
 
 }  // namespace
 
 class CloudExternalDataPolicyObserverTest
     : public chromeos::DeviceSettingsTestBase,
       public CloudExternalDataPolicyObserver::Delegate {
  public:
   typedef std::pair<std::string, std::string> FetchedCall;
 
@@ skipping 853 matching lines @@
 
   EXPECT_TRUE(set_calls_.empty());
   EXPECT_TRUE(cleared_calls_.empty());
   ASSERT_EQ(1u, fetched_calls_.size());
   EXPECT_EQ(kRegularUserID, fetched_calls_.front().first);
   EXPECT_EQ(avatar_policy_2_data_, fetched_calls_.front().second);
   ClearObservations();
 }
 
 }  // namespace policy