Allowing registering arbitrary schemes as supporting the fetch API.

public/web/WebSecurityPolicy.h

Index: public/web/WebSecurityPolicy.h
diff --git a/public/web/WebSecurityPolicy.h b/public/web/WebSecurityPolicy.h
index 33b4c9984b868143213e9d4e8054a0bee14e66c5..cefac548b169aa49d0d1107b794a714e2edcb205 100644
--- a/public/web/WebSecurityPolicy.h
+++ b/public/web/WebSecurityPolicy.h
@@ -76,6 +76,9 @@ public:
     // Registers a URL scheme that can register a ServiceWorker.
     BLINK_EXPORT static void registerURLSchemeAsAllowingServiceWorkers(const WebString&);
 
+    // Registers an HTTP-like URL scheme that supports the Fetch API.
+    BLINK_EXPORT static void registerURLSchemeAsSupportingFetchAPI(const WebString&);
+
     // Registers a URL scheme whose resources can be loaded regardless of a page's Content Security Policy.
     BLINK_EXPORT static void registerURLSchemeAsBypassingContentSecurityPolicy(const WebString&);