[inspector_protocol] Allow custom json parser.

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 520 matching lines @@
     const Char* end = start + length;
     const Char *tokenEnd;
     std::unique_ptr<Value> value = buildValue(start, end, &tokenEnd, 0);
     if (!value || tokenEnd != end)
         return nullptr;
     return value;
 }
 
 } // anonymous namespace
 
-std::unique_ptr<Value> parseJSON(const uint16_t* characters, unsigned length)
+std::unique_ptr<Value> parseJSONCharacters(const uint16_t* characters, unsigned length)
 {
     return parseJSONInternal<uint16_t>(characters, length);
 }
 
-std::unique_ptr<Value> parseJSON(const uint8_t* characters, unsigned length)
+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 %}