Modify the base::JSONReader interface to take a set of options rather than a boolean flag.

chrome/test/webdriver/webdriver_dispatch.cc

Index: chrome/test/webdriver/webdriver_dispatch.cc
diff --git a/chrome/test/webdriver/webdriver_dispatch.cc b/chrome/test/webdriver/webdriver_dispatch.cc
index 33ac629299b1f219f233cfb64a0ace943a940561..d5a278408d90cce9dda62fd09ded223f5fdd8ebe 100644
--- a/chrome/test/webdriver/webdriver_dispatch.cc
+++ b/chrome/test/webdriver/webdriver_dispatch.cc
@@ -320,7 +320,7 @@ bool ParseRequestInfo(const struct mg_request_info* const request_info,
     if (json.length() > 0) {
       std::string error_msg;
       scoped_ptr<Value> params(base::JSONReader::ReadAndReturnError(
-          json, true, NULL, &error_msg));
+          json, base::JSON_ALLOW_TRAILING_COMMAS, NULL, &error_msg));
       if (!params.get()) {
         response->SetError(new Error(
             kBadRequest,