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

components/autofill/content/browser/wallet/wallet_client_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 "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
@@ skipping 858 matching lines @@
 
     // If this is not a JSON dictionary, return plain text.
     if (!root || !root->IsType(base::Value::TYPE_DICTIONARY))
       return upload_data;
 
     // Remove api_key entry (to prevent accidental leak), return JSON as text.
     base::DictionaryValue* dict =
         static_cast<base::DictionaryValue*>(root.get());
     dict->Remove("api_key", NULL);
     std::string clean_upload_data;
-    base::JSONWriter::Write(dict, &clean_upload_data);
+    base::JSONWriter::Write(*dict, &clean_upload_data);
     return clean_upload_data;
   }
 
   net::TestURLFetcherFactory factory_;
 };
 
 TEST_F(WalletClientTest, WalletErrorCodes) {
   struct {
     std::string error_type_string;
     std::string message_type_for_buyer_string;
@@ skipping 1004 matching lines @@
   EXPECT_TRUE(wallet_client_->HasRequestInProgress());
   wallet_client_->CancelRequest();
   EXPECT_FALSE(wallet_client_->HasRequestInProgress());
 
   ExpectBaselineMetrics(histogram);
   histogram.ExpectTotalCount("Wallet.ApiCallDuration.GetWalletItems", 0);
 }
 
 }  // namespace wallet
 }  // namespace autofill