Make V8ValueConverter.FromV8Value behave similarly to JSON.stringify

chrome/renderer/resources/extensions/send_request.js

Index: chrome/renderer/resources/extensions/send_request.js
diff --git a/chrome/renderer/resources/extensions/send_request.js b/chrome/renderer/resources/extensions/send_request.js
index 1d7231f22a0ca09793ea31f9854a6b4d9abf3b6d..9b474a3aa8d7e01b185d6c1e34fb1884476ff6d3 100644
--- a/chrome/renderer/resources/extensions/send_request.js
+++ b/chrome/renderer/resources/extensions/send_request.js
@@ -85,6 +85,7 @@ function prepareRequest(args, argSchemas) {
 //   StartRequest if missing.
 // - forIOThread: true if this function should be handled on the browser IO
 //   thread.
+// - preserveNullInObjects: true if it is safe for null to be in objects.
 function sendRequest(functionName, args, argSchemas, opt_args) {
   if (!opt_args)
     opt_args = {};
@@ -111,7 +112,7 @@ function sendRequest(functionName, args, argSchemas, opt_args) {
   var hasCallback =
       (request.callback || opt_args.customCallback) ? true : false;
   return nativeFunction(functionName, requestArgs, requestId, hasCallback,
-                        opt_args.forIOThread);
+                        opt_args.forIOThread, opt_args.preserveNullInObjects);
 }
 
 exports.sendRequest = sendRequest;