Allowing registering arbitrary schemes as supporting the fetch API.

Source/web/WebSecurityPolicy.cpp

Index: Source/web/WebSecurityPolicy.cpp
diff --git a/Source/web/WebSecurityPolicy.cpp b/Source/web/WebSecurityPolicy.cpp
index 41e77211828767251ea50640bcb7b505f83664a9..df415c8e00387d4ab75cc2ee6fc2ee399ea6c3fd 100644
--- a/Source/web/WebSecurityPolicy.cpp
+++ b/Source/web/WebSecurityPolicy.cpp
@@ -81,6 +81,11 @@ void WebSecurityPolicy::registerURLSchemeAsAllowingServiceWorkers(const WebStrin
     SchemeRegistry::registerURLSchemeAsAllowingServiceWorkers(scheme);
 }
 
+void WebSecurityPolicy::registerURLSchemeAsSupportingFetchAPI(const WebString& scheme)
+{
+    SchemeRegistry::registerURLSchemeAsSupportingFetchAPI(scheme);
+}
+
 void WebSecurityPolicy::registerURLSchemeAsBypassingContentSecurityPolicy(const WebString& scheme)
 {
     SchemeRegistry::registerURLSchemeAsBypassingContentSecurityPolicy(scheme);