Refactor chromedriver's script execution to reduce amount of custom Value parsing.

chrome/test/webdriver/webdriver_util.cc

 // Copyright (c) 2011 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/test/webdriver/utility_functions.h"
+#include "chrome/test/webdriver/webdriver_util.h"
 
 #include "base/basictypes.h"
 #include "base/format_macros.h"
 #include "base/json/json_writer.h"
 #include "base/rand_util.h"
 #include "base/stringprintf.h"
 #include "base/values.h"
 
 namespace webdriver {
 
+SkipParsing* kSkipParsing = NULL;
+
 std::string GenerateRandomID() {
   uint64 msb = base::RandUint64();
   uint64 lsb = base::RandUint64();
   return base::StringPrintf("%016" PRIx64 "%016" PRIx64, msb, lsb);
 }
 
 std::string JsonStringify(const Value* value) {
   std::string json;
   base::JSONWriter::Write(value, false, &json);
   return json;
 }
 
+ValueParser::ValueParser() { }
+
+ValueParser::~ValueParser() { }
+
 }  // namespace webdriver
+
+bool ValueConversionTraits<webdriver::SkipParsing>::SetFromValue(
+    const base::Value* value, const webdriver::SkipParsing* t) {
+  return true;
+}
+
+bool ValueConversionTraits<webdriver::SkipParsing>::CanConvert(
+    const base::Value* value) {
+  return true;
+}