[WIP] off-main-thread loading

third_party/WebKit/Source/core/loader/resource/DocumentResource.h

Index: third_party/WebKit/Source/core/loader/resource/DocumentResource.h
diff --git a/third_party/WebKit/Source/core/loader/resource/DocumentResource.h b/third_party/WebKit/Source/core/loader/resource/DocumentResource.h
index adc4565077877715ad74872e6bdcbb62d44f8f48..d0c0bd209f34146aadf3918924f64e7406a319a2 100644
--- a/third_party/WebKit/Source/core/loader/resource/DocumentResource.h
+++ b/third_party/WebKit/Source/core/loader/resource/DocumentResource.h
@@ -55,7 +55,8 @@ class CORE_EXPORT DocumentResource final : public TextResource {
 
     Resource* create(const ResourceRequest& request,
                      const ResourceLoaderOptions& options,
-                     const String& charset) const override {
+                     const String& charset,
+                     FetchContext*) const override {
       return new DocumentResource(request, Resource::SVGDocument, options);
     }
   };