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

chrome/browser/local_discovery/privet_http_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/bind.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/message_loop/message_loop.h"
 #include "base/thread_task_runner_handle.h"
 #include "chrome/browser/local_discovery/privet_http_impl.h"
@@ skipping 204 matching lines @@
     "}";
 #endif  // ENABLE_PRINT_PREVIEW
 
 // Return the representation of the given JSON that would be outputted by
 // JSONWriter. This ensures the same JSON values are represented by the same
 // string.
 std::string NormalizeJson(const std::string& json) {
   std::string result = json;
   scoped_ptr<base::Value> value(base::JSONReader::Read(result));
   DCHECK(value);
-  base::JSONWriter::Write(value.get(), &result);
+  base::JSONWriter::Write(*value, &result);
   return result;
 }
 
 class MockTestURLFetcherFactoryDelegate
     : public net::TestURLFetcher::DelegateForTests {
  public:
   // Callback issued correspondingly to the call to the |Start()| method.
   MOCK_METHOD1(OnRequestStart, void(int fetcher_id));
 
   // Callback issued correspondingly to the call to |AppendChunkToUpload|.
@@ skipping 837 matching lines @@
 
   EXPECT_TRUE(SuccessfulResponseToURL(
       GURL("http://10.0.0.8:6006/privet/printer/createjob"),
       kSampleCreatejobResponse));
 }
 #endif  // ENABLE_PRINT_PREVIEW
 
 }  // namespace
 
 }  // namespace local_discovery