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

content/browser/devtools/protocol/devtools_protocol_browsertest.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/base64.h"
 #include "base/command_line.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/values.h"
 #include "content/public/browser/devtools_agent_host.h"
@@ skipping 21 matching lines @@
  protected:
   void SendCommand(const std::string& method,
                    scoped_ptr<base::DictionaryValue> params) {
     base::DictionaryValue command;
     command.SetInteger(kIdParam, 1);
     command.SetString(kMethodParam, method);
     if (params)
       command.Set(kParamsParam, params.release());
 
     std::string json_command;
-    base::JSONWriter::Write(&command, &json_command);
+    base::JSONWriter::Write(command, &json_command);
     agent_host_->DispatchProtocolMessage(json_command);
     base::MessageLoop::current()->Run();
   }
 
   bool HasValue(const std::string& path) {
     base::Value* value = 0;
     return result_->Get(path, &value);
   }
 
   bool HasListItem(const std::string& path_to_list,
@@ skipping 202 matching lines @@
   // new value of |document.body.scrollTop| will depend on the screen dimensions
   // of the device that we're testing on, but in any case it should be greater
   // than 0.
   ASSERT_TRUE(content::ExecuteScriptAndExtractInt(
       shell()->web_contents(),
       "domAutomationController.send(document.body.scrollTop)", &scroll_top));
   ASSERT_GT(scroll_top, 0);
 }
 
 }  // namespace content