Adapt String::find method via StringUtil adapter. [inspector_protocol repo]

lib/DispatcherBase_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.
 
 //#include "DispatcherBase.h"
 //#include "Parser.h"
 
 {% for namespace in config.protocol.namespace %}
 namespace {{namespace}} {
 {% endfor %}
@@ skipping 272 matching lines @@
         *outMethod = method;
     if (!success) {
         reportProtocolErrorTo(m_frontendChannel, callId, DispatchResponse::kInvalidRequest, "Message must have string 'method' porperty", nullptr);
         return DispatchResponse::kError;
     }
 
     HashMap<String, String>::iterator redirectIt = m_redirects.find(method);
     if (redirectIt != m_redirects.end())
         method = redirectIt->second;
 
-    size_t dotIndex = method.find(".");
+    size_t dotIndex = StringUtil::find(method, ".");
     if (dotIndex == StringUtil::kNotFound) {
         if (m_fallThroughForNotFound)
             return DispatchResponse::kFallThrough;
         reportProtocolErrorTo(m_frontendChannel, callId, DispatchResponse::kMethodNotFound, "'" + method + "' wasn't found", nullptr);
         return DispatchResponse::kError;
     }
     String domain = StringUtil::substring(method, 0, dotIndex);
     auto it = m_dispatchers.find(domain);
     if (it == m_dispatchers.end()) {
         if (m_fallThroughForNotFound)
@@ skipping 35 matching lines @@
 InternalResponse::InternalResponse(int callId, const String& notification, std::unique_ptr<Serializable> params)
     : m_callId(callId)
     , m_notification(notification)
     , m_params(params ? std::move(params) : nullptr)
 {
 }
 
 {% for namespace in config.protocol.namespace %}
 } // namespace {{namespace}}
 {% endfor %}