Allowing registering arbitrary schemes as supporting the fetch API.

Source/platform/weborigin/SchemeRegistry.h

 /*
  * Copyright (C) 2010 Apple Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 73 matching lines @@
     // Serialize the registered schemes in a comma-separated list.
     static String listOfCORSEnabledURLSchemes();
 
     // "Legacy" schemes (e.g. 'ftp:', 'gopher:') which we might want to treat differently from "webby" schemes.
     static bool shouldTreatURLSchemeAsLegacy(const String& scheme);
 
     // Schemes that can register a service worker.
     static void registerURLSchemeAsAllowingServiceWorkers(const String& scheme);
     static bool shouldTreatURLSchemeAsAllowingServiceWorkers(const String& scheme);
 
+    // HTTP-like schemes that are treated as supporting the Fetch API.
+    static void registerURLSchemeAsSupportingFetchAPI(const String& scheme);
+    static bool shouldTreatURLSchemeAsSupportingFetchAPI(const String& scheme);
+
     // Allow resources from some schemes to load on a page, regardless of its
     // Content Security Policy.
     // This enum should be kept in sync with public/web/WebSecurityPolicy.h.
     // Enforced in AssertMatchingEnums.cpp.
     enum PolicyAreas : uint32_t {
         PolicyAreaNone = 0,
         PolicyAreaImage = 1 << 0,
         PolicyAreaStyle = 1 << 1,
         // Add more policy areas as needed by clients.
         PolicyAreaAll = ~static_cast<uint32_t>(0),
     };
     static void registerURLSchemeAsBypassingContentSecurityPolicy(const String& scheme, PolicyAreas = PolicyAreaAll);
     static void removeURLSchemeRegisteredAsBypassingContentSecurityPolicy(const String& scheme);
     static bool schemeShouldBypassContentSecurityPolicy(const String& scheme, PolicyAreas = PolicyAreaAll);
 
 private:
     static const URLSchemesSet& localSchemes();
 };
 
 } // namespace blink
 
 #endif // SchemeRegistry_h