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

components/search_provider_logos/logo_tracker_unittest.cc

 // Copyright 2014 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/search_provider_logos/logo_tracker.h"
 
 #include <vector>
 
 #include "base/base64.h"
 #include "base/bind.h"
@@ skipping 121 matching lines @@
   if (!animated_url.empty())
     dict.SetString("update.logo.url", animated_url);
   if (!mime_type.empty())
     dict.SetString("update.logo.mime_type", mime_type);
   dict.SetString("update.logo.fingerprint", fingerprint);
   if (time_to_live.ToInternalValue() != 0)
     dict.SetInteger("update.logo.time_to_live",
                     static_cast<int>(time_to_live.InMilliseconds()));
 
   std::string output;
-  base::JSONWriter::Write(&dict, &output);
+  base::JSONWriter::Write(dict, &output);
   return output;
 }
 
 std::string MakeServerResponse(const Logo& logo, base::TimeDelta time_to_live) {
   return MakeServerResponse(logo.image,
                             logo.metadata.on_click_url,
                             logo.metadata.alt_text,
                             logo.metadata.animated_url,
                             logo.metadata.mime_type,
                             logo.metadata.fingerprint,
@@ skipping 580 matching lines @@
   MockLogoObserver listener2;
   listener2.ExpectFreshLogo(&logo);
   logo_tracker_->GetLogo(&listener2);
 
   base::RunLoop().RunUntilIdle();
 }
 
 }  // namespace
 
 }  // namespace search_provider_logos