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

chrome/browser/devtools/devtools_ui_bindings.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 "chrome/browser/devtools/devtools_ui_bindings.h"
 
 #include "base/command_line.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/metrics/histogram.h"
@@ skipping 998 matching lines @@
   return agent_host_.get() == agent_host;
 }
 
 void DevToolsUIBindings::CallClientFunction(const std::string& function_name,
                                             const base::Value* arg1,
                                             const base::Value* arg2,
                                             const base::Value* arg3) {
   std::string javascript = function_name + "(";
   if (arg1) {
     std::string json;
-    base::JSONWriter::Write(arg1, &json);
+    base::JSONWriter::Write(*arg1, &json);
     javascript.append(json);
     if (arg2) {
-      base::JSONWriter::Write(arg2, &json);
+      base::JSONWriter::Write(*arg2, &json);
       javascript.append(", ").append(json);
       if (arg3) {
-        base::JSONWriter::Write(arg3, &json);
+        base::JSONWriter::Write(*arg3, &json);
         javascript.append(", ").append(json);
       }
     }
   }
   javascript.append(");");
   web_contents_->GetMainFrame()->ExecuteJavaScript(
       base::UTF8ToUTF16(javascript));
 }
 
 void DevToolsUIBindings::DocumentOnLoadCompletedInMainFrame() {
@@ skipping 13 matching lines @@
   if (frontend_loaded_)
     return;
   frontend_loaded_ = true;
 
   // Call delegate first - it seeds importants bit of information.
   delegate_->OnLoadCompleted();
 
   UpdateTheme();
   AddDevToolsExtensionsToClient();
 }