Enable websocket filtering via SubresourceFilter

third_party/WebKit/Source/core/loader/DocumentSubresourceFilterClient.h

Index: third_party/WebKit/Source/core/loader/DocumentSubresourceFilterClient.h
diff --git a/third_party/WebKit/Source/core/loader/DocumentSubresourceFilterClient.h b/third_party/WebKit/Source/core/loader/DocumentSubresourceFilterClient.h
index f6c00d2a21b8ad3ccff82306ab673517d748662d..4d669d8332c458b5f2dec4dde83b3b0e70972e3d 100644
--- a/third_party/WebKit/Source/core/loader/DocumentSubresourceFilterClient.h
+++ b/third_party/WebKit/Source/core/loader/DocumentSubresourceFilterClient.h
@@ -9,13 +9,13 @@
 
 #include "core/CoreExport.h"
 #include "platform/heap/Handle.h"
+#include "public/platform/WebDocumentSubresourceFilter.h"
 #include "public/platform/WebURLRequest.h"
 
 namespace blink {
 
 class DocumentLoader;
 class KURL;
-class WebDocumentSubresourceFilter;
 
 // Wrapper around a WebDocumentSubresourceFilter. This class will make it easier
 // to extend the subresource filter with optimizations only possible using blink
@@ -32,6 +32,7 @@ class CORE_EXPORT DocumentSubresourceFilterClient final
   bool allowLoad(const KURL& resourceUrl,
                  WebURLRequest::RequestContext,
                  ReportingPolicy);
+  bool allowWebSocketConnection(const KURL& resourceUrl);
 
   DEFINE_INLINE_TRACE() { visitor->trace(m_documentLoader); }
 
@@ -40,6 +41,9 @@ class CORE_EXPORT DocumentSubresourceFilterClient final
       DocumentLoader*,
       std::unique_ptr<WebDocumentSubresourceFilter>);
 
+  void notifyLoad(const KURL& resourceUrl,
+                  WebDocumentSubresourceFilter::LoadPolicy);
+
   Member<DocumentLoader> m_documentLoader;
   std::unique_ptr<WebDocumentSubresourceFilter> m_subresourceFilter;
 };