[chromedriver] Add chrome.detach option for configuring Chrome not to quit

chrome/test/webdriver/webdriver_dispatch.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/webdriver_dispatch.h"
 
 #include <sstream>
 #include <string>
 #include <vector>
 
@@ skipping 37 matching lines @@
 
   if (method == "POST") {
     command->ExecutePost(response);
   } else if (method == "GET") {
     command->ExecuteGet(response);
   } else if (method == "DELETE") {
     command->ExecuteDelete(response);
   } else {
     NOTREACHED();
   }
+  command->Finish();
 }
 
 void Shutdown(struct mg_connection* connection,
               const struct mg_request_info* request_info,
               void* user_data) {
   base::WaitableEvent* shutdown_event =
       reinterpret_cast<base::WaitableEvent*>(user_data);
   mg_printf(connection, "HTTP/1.1 200 OK\r\n\r\n");
   shutdown_event->Signal();
 }
@@ skipping 263 matching lines @@
 void Dispatcher::SetNotImplemented(const std::string& pattern) {
   mg_set_uri_callback(context_, (root_ + pattern).c_str(),
                       &SendNotImplementedError, NULL);
 }
 
 void Dispatcher::ForbidAllOtherRequests() {
   mg_set_uri_callback(context_, "*", &SendForbidden, NULL);
 }
 
 }  // namespace webdriver