Skeleton of the Safe Browsing Subresource Filter.

third_party/WebKit/Source/platform/network/ResourceRequest.h

Index: third_party/WebKit/Source/platform/network/ResourceRequest.h
diff --git a/third_party/WebKit/Source/platform/network/ResourceRequest.h b/third_party/WebKit/Source/platform/network/ResourceRequest.h
index 5ceefdf330521fd1ee4a999af409dbbdb08e3031..f2760c142a2cd29bf5b37500e33b2b70cf8c8189 100644
--- a/third_party/WebKit/Source/platform/network/ResourceRequest.h
+++ b/third_party/WebKit/Source/platform/network/ResourceRequest.h
@@ -50,6 +50,7 @@ enum ResourceRequestBlockedReason {
     ResourceRequestBlockedReasonMixedContent,
     ResourceRequestBlockedReasonOrigin,
     ResourceRequestBlockedReasonInspector,
+    ResourceRequestBlockedReasonClient,

[Mike West, 2016/06/01 13:43:18]

Does this map to `BLOCKED_BY_CLIENT` in `net_error_list.h`? If so, I think it
probably shouldn't, as that error code more or less maps to "blocked by an
extension", and renders that as an error page. If not, it should probably be
renamed. :)

[engedy, 2016/06/02 23:07:19]

It hasn't to do with that error code, so I renamed s/Client/SubresourceFilter/.
WDYT?

     ResourceRequestBlockedReasonOther,
     ResourceRequestBlockedReasonNone
 };