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

Source/core/inspector/InspectorInstrumentation.idl

 /*
 * 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 207 matching lines @@
     [Resource, Page, Inline=FastReturn]
     void didRecalculateStyle(const InspectorInstrumentationCookie&, int elementCount);
 
     [Resource, Inline=FastReturn]
     void didScheduleStyleRecalculation([Keep] Document*);
 
     [Resource, Inline=FastReturn]
     void applyUserAgentOverride(LocalFrame*, String* userAgent);
 
     [Resource]
+    bool shouldBlockRequest(LocalFrame*, const ResourceRequest&);
+
+    [Resource]
     void willSendRequest(LocalFrame*, unsigned long identifier, DocumentLoader*, ResourceRequest&, const ResourceResponse& redirectResponse, const FetchInitiatorInfo&);
 
     [Resource]
     void markResourceAsCached(LocalFrame*, unsigned long identifier);
 
     [Resource]
     void didReceiveResourceResponse([Keep] LocalFrame*, unsigned long identifier, DocumentLoader*, const ResourceResponse&, ResourceLoader*);
 
     [Inline=Forward]
     void continueAfterXFrameOptionsDenied(LocalFrame* frame, DocumentLoader* loader, unsigned long identifier, const ResourceResponse& r);
@@ skipping 207 matching lines @@
 interface InspectorOverrides {
     [CSS, Inline=FastReturn]
     bool forcePseudoState([Keep] Element* element, CSSSelector::PseudoType pseudoState);
 
     [Worker, Inline=FastReturn]
     bool shouldPauseDedicatedWorkerOnStart(ExecutionContext* context);
 
     [Resource, Inline=FastReturn]
     bool shouldForceCORSPreflight(Document*);
 }