[inspector_protocol] added StringUtil::toDouble method as requirement

lib/Parser_cpp.template

 // Copyright 2016 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.
 
 {% for namespace in config.protocol.namespace %}
 namespace {{namespace}} {
 {% endfor %}
 
 namespace {
 
@@ skipping 34 matching lines @@
     buffer.reserve(length + 1);
     for (size_t i = 0; i < length; ++i) {
         if (!isASCII(characters[i])) {
             *ok = false;
             return 0;
         }
         buffer.push_back(static_cast<char>(characters[i]));
     }
     buffer.push_back('\0');
     char* endptr;
-    double result = std::strtod(buffer.data(), &endptr);
-    *ok = !(*endptr);
-    return result;
+    return StringUtil::toDouble(buffer.data(), length, ok);
 }
 
 double charactersToDouble(const uint8_t* characters, size_t length, bool* ok)
 {
     std::string buffer(reinterpret_cast<const char*>(characters), length);
-    char* endptr;
-    double result = std::strtod(buffer.data(), &endptr);
-    *ok = !(*endptr);
-    return result;
+    return StringUtil::toDouble(buffer.data(), length, ok);
 }
 
 template<typename Char>
 bool parseConstToken(const Char* start, const Char* end, const Char** tokenEnd, const char* token)
 {
     while (start < end && *token != '\0' && *start++ == *token++) { }
     if (*token != '\0')
         return false;
     *tokenEnd = start;
     return true;
@@ skipping 467 matching lines @@
 }
 
 std::unique_ptr<Value> parseJSONCharacters(const uint8_t* characters, unsigned length)
 {
     return parseJSONInternal<uint8_t>(characters, length);
 }
 
 {% for namespace in config.protocol.namespace %}
 } // namespace {{namespace}}
 {% endfor %}