[instrumentation] Turn inspector override "probes" return values into output parameters.

third_party/WebKit/Source/core/loader/DocumentThreadableLoader.cpp

 /*
  * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013, Intel Corporation
  *
  * 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.
@@ skipping 19 matching lines @@
  */
 
 #include "core/loader/DocumentThreadableLoader.h"
 
 #include <memory>
 #include "core/dom/Document.h"
 #include "core/dom/TaskRunnerHelper.h"
 #include "core/frame/FrameConsole.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/LocalFrameClient.h"
+#include "core/inspector/InspectorNetworkAgent.h"
 #include "core/inspector/InspectorTraceEvents.h"
 #include "core/loader/DocumentThreadableLoaderClient.h"
 #include "core/loader/FrameLoader.h"
 #include "core/loader/ThreadableLoaderClient.h"
 #include "core/loader/ThreadableLoadingContext.h"
 #include "core/loader/private/CrossOriginPreflightResultCache.h"
 #include "core/page/ChromeClient.h"
 #include "core/page/Page.h"
 #include "core/probe/CoreProbes.h"
 #include "platform/SharedBuffer.h"
@@ skipping 329 matching lines @@
     // Explicitly set the ServiceWorkerMode to None here. Although the page is
     // not controlled by a SW at this point, a new SW may be controlling the
     // page when this request gets sent later. We should not send the actual
     // request to the SW. https://crbug.com/604583
     // Similarly we don't want any requests that could involve a CORS preflight
     // to get intercepted by a foreign fetch service worker, even if we have the
     // result of the preflight cached already. https://crbug.com/674370
     crossOriginRequest.setServiceWorkerMode(
         WebURLRequest::ServiceWorkerMode::None);
 
-    bool shouldForcePreflight = request.isExternalRequest() ||
-                                probe::shouldForceCORSPreflight(document());
+    bool shouldForcePreflight = request.isExternalRequest();
+    if (!shouldForcePreflight)
+      probe::shouldForceCORSPreflight(document(), &shouldForcePreflight);
     bool canSkipPreflight =
         CrossOriginPreflightResultCache::shared().canSkipPreflight(
             getSecurityOrigin()->toString(), crossOriginRequest.url(),
             effectiveAllowCredentials(), crossOriginRequest.httpMethod(),
             crossOriginRequest.httpHeaderFields());
     if (canSkipPreflight && !shouldForcePreflight) {
       prepareCrossOriginRequest(crossOriginRequest);
       loadRequest(crossOriginRequest, crossOriginOptions);
     } else {
       ResourceRequest preflightRequest =
@@ skipping 743 matching lines @@
 }
 
 DEFINE_TRACE(DocumentThreadableLoader) {
   visitor->trace(m_resource);
   visitor->trace(m_loadingContext);
   ThreadableLoader::trace(visitor);
   RawResourceClient::trace(visitor);
 }
 
 }  // namespace blink