[DevTools] Implementation of resource requests blocked by specific urls.

Source/core/loader/FrameFetchContext.cpp

 /*
  * Copyright (C) 2013 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 330 matching lines @@
     else if (url.isLocalFile() || m_document->url().isLocalFile())
         message = "Unsafe attempt to load URL " + url.elidedString() + " from frame with URL " + m_document->url().elidedString() + ". 'file:' URLs are treated as unique security origins.\n";
     else
         message = "Unsafe attempt to load URL " + url.elidedString() + " from frame with URL " + m_document->url().elidedString() + ". Domains, protocols and ports must match.\n";
 
     frame()->document()->addConsoleMessage(ConsoleMessage::create(SecurityMessageSource, ErrorMessageLevel, message));
 }
 
 bool FrameFetchContext::canRequest(Resource::Type type, const ResourceRequest& resourceRequest, const KURL& url, const ResourceLoaderOptions& options, bool forPreload, FetchRequest::OriginRestriction originRestriction) const
 {
+    if (InspectorInstrumentation::shouldBlockRequest(frame(), resourceRequest))
+        return false;
+
     SecurityOrigin* securityOrigin = options.securityOrigin.get();
     if (!securityOrigin && m_document)
         securityOrigin = m_document->securityOrigin();
 
     if (originRestriction != FetchRequest::NoOriginRestriction && securityOrigin && !securityOrigin->canDisplay(url)) {
         if (!forPreload)
             FrameLoader::reportLocalLoadFailed(frame(), url.elidedString());
         WTF_LOG(ResourceLoading, "ResourceFetcher::requestResource URL was not allowed by SecurityOrigin::canDisplay");
         return false;
     }
@@ skipping 331 matching lines @@
 
 
 DEFINE_TRACE(FrameFetchContext)
 {
     visitor->trace(m_document);
     visitor->trace(m_documentLoader);
     FetchContext::trace(visitor);
 }
 
 } // namespace blink