Teach ContentSecurityPolicy about WebURLRequest::RequestContext.

Source/core/fetch/ResourceFetcher.h

Index: Source/core/fetch/ResourceFetcher.h
diff --git a/Source/core/fetch/ResourceFetcher.h b/Source/core/fetch/ResourceFetcher.h
index 761cb9838010a6dc7ffa8bf2588b20d09ddec957..5f1d05a8a481fc4e737d3f1fe2e1cb54ba9f287e 100644
--- a/Source/core/fetch/ResourceFetcher.h
+++ b/Source/core/fetch/ResourceFetcher.h
@@ -34,6 +34,7 @@
 #include "core/fetch/ResourceLoaderOptions.h"
 #include "core/fetch/ResourcePtr.h"
 #include "platform/Timer.h"
+#include "public/platform/WebURLRequest.h"
 #include "wtf/Deque.h"
 #include "wtf/HashMap.h"
 #include "wtf/HashSet.h"
@@ -188,7 +189,7 @@ private:
     ResourceRequestCachePolicy resourceRequestCachePolicy(const ResourceRequest&, Resource::Type);
     void addAdditionalRequestHeaders(ResourceRequest&, Resource::Type);
 
-    bool canRequest(Resource::Type, const KURL&, const ResourceLoaderOptions&, bool forPreload, FetchRequest::OriginRestriction) const;
+    bool canRequest(Resource::Type, blink::WebURLRequest::RequestContext, const KURL&, const ResourceLoaderOptions&, bool forPreload, FetchRequest::OriginRestriction) const;
     bool checkInsecureContent(Resource::Type, const KURL&, MixedContentBlockingTreatment) const;
 
     static bool resourceNeedsLoad(Resource*, const FetchRequest&, RevalidationPolicy);