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

Source/core/loader/FrameFetchContext.cpp

Index: Source/core/loader/FrameFetchContext.cpp
diff --git a/Source/core/loader/FrameFetchContext.cpp b/Source/core/loader/FrameFetchContext.cpp
index c0771e70b85666694be354ca9f2b1dec1e7cef9a..11b198cd2dedb5cd058f02b236c4d96c07e34abc 100644
--- a/Source/core/loader/FrameFetchContext.cpp
+++ b/Source/core/loader/FrameFetchContext.cpp
@@ -348,6 +348,9 @@ void FrameFetchContext::printAccessDeniedMessage(const KURL& url) const
 
 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();