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

chrome/browser/ui/webui/certificate_viewer_webui.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 "chrome/browser/ui/webui/certificate_viewer_webui.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/i18n/time_formatting.h"
 #include "base/json/json_writer.h"
@@ skipping 169 matching lines @@
     if (children)
       cert_node->Set("children", children);
 
     // Add this node to the children list for the next iteration.
     children = new base::ListValue();
     children->Append(cert_node);
   }
   // Set the last node as the top of the certificate hierarchy.
   cert_info.Set("hierarchy", children);
 
-  base::JSONWriter::Write(&cert_info, &data);
+  base::JSONWriter::Write(cert_info, &data);
 
   return data;
 }
 
 void CertificateViewerModalDialog::OnDialogShown(
     content::WebUI* webui,
     content::RenderViewHost* render_view_host) {
   webui_ = webui;
 }
 
@@ skipping 237 matching lines @@
     const base::ListValue* args) const {
   int cert_index;
   double val;
   if (!(args->GetDouble(0, &val)))
     return -1;
   cert_index = static_cast<int>(val);
   if (cert_index < 0 || cert_index >= static_cast<int>(cert_chain_.size()))
     return -1;
   return cert_index;
 }