Add Network.setSendRequestIdHeader and use it in headless

third_party/WebKit/Source/core/inspector/InspectorNetworkAgent.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 677 matching lines @@
   if (m_state->booleanProperty(NetworkAgentState::bypassServiceWorker, false))
     request.setSkipServiceWorker(WebURLRequest::SkipServiceWorker::All);
 
   willSendRequestInternal(frame, identifier, loader, request, redirectResponse,
                           initiatorInfo);
 
   if (!m_hostId.isEmpty())
     request.addHTTPHeaderField(
         HTTPNames::X_DevTools_Emulate_Network_Conditions_Client_Id,
         AtomicString(m_hostId));
+
+  request.setHTTPHeaderField(
+      HTTPNames::X_DevTools_Request_Id,
+      AtomicString(IdentifiersFactory::requestId(identifier)));
 }
 
 void InspectorNetworkAgent::markResourceAsCached(unsigned long identifier) {
   frontend()->requestServedFromCache(IdentifiersFactory::requestId(identifier));
 }
 
 void InspectorNetworkAgent::didReceiveResourceResponse(
     LocalFrame* frame,
     unsigned long identifier,
     DocumentLoader* loader,
@@ skipping 862 matching lines @@
           TaskRunnerHelper::get(TaskType::UnspecedLoading,
                                 inspectedFrames->root()),
           this,
           &InspectorNetworkAgent::removeFinishedReplayXHRFired) {}
 
 bool InspectorNetworkAgent::shouldForceCORSPreflight() {
   return m_state->booleanProperty(NetworkAgentState::cacheDisabled, false);
 }
 
 }  // namespace blink