Implement request's redirect mode and RequestRedirect for Fetch

public/platform/WebURLRequest.h

 /*
  * Copyright (C) 2009 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 104 matching lines @@
         FetchRequestModeCORS,
         FetchRequestModeCORSWithForcedPreflight
     };
 
     enum FetchCredentialsMode {
         FetchCredentialsModeOmit,
         FetchCredentialsModeSameOrigin,
         FetchCredentialsModeInclude
     };
 
+    enum FetchRedirectMode {
+        FetchRedirectModeFollow,
+        FetchRedirectModeError,
+        FetchRedirectModeManual
+    };
+
     // Used to report performance metrics timed from the UI action that
     // triggered them (as opposed to navigation start time used in the
     // Navigation Timing API).
     enum InputToLoadPerfMetricReportPolicy {
         NoReport, // Don't report metrics for this WebURLRequest.
         ReportLink, // Report metrics with UI action link clicked.
         ReportIntent, // Report metrics with UI action displayed intent.
     };
 
     class ExtraData {
@@ skipping 110 matching lines @@
     BLINK_PLATFORM_EXPORT void setShouldResetAppCache(bool);
 
     // The request mode which will be passed to the ServiceWorker.
     BLINK_PLATFORM_EXPORT FetchRequestMode fetchRequestMode() const;
     BLINK_PLATFORM_EXPORT void setFetchRequestMode(FetchRequestMode);
 
     // The credentials mode which will be passed to the ServiceWorker.
     BLINK_PLATFORM_EXPORT FetchCredentialsMode fetchCredentialsMode() const;
     BLINK_PLATFORM_EXPORT void setFetchCredentialsMode(FetchCredentialsMode);
 
+    // The redirect mode which will be passed to the ServiceWorker.
+    BLINK_PLATFORM_EXPORT FetchRedirectMode fetchRedirectMode() const;
+    BLINK_PLATFORM_EXPORT void setFetchRedirectMode(FetchRedirectMode);
+
     // Extra data associated with the underlying resource request. Resource
     // requests can be copied. If non-null, each copy of a resource requests
     // holds a pointer to the extra data, and the extra data pointer will be
     // deleted when the last resource request is destroyed. Setting the extra
     // data pointer will cause the underlying resource request to be
     // dissociated from any existing non-null extra data pointer.
     BLINK_PLATFORM_EXPORT ExtraData* extraData() const;
     BLINK_PLATFORM_EXPORT void setExtraData(ExtraData*);
 
     BLINK_PLATFORM_EXPORT Priority priority() const;
@@ skipping 27 matching lines @@
 protected:
     BLINK_PLATFORM_EXPORT void assign(WebURLRequestPrivate*);
 
 private:
     WebURLRequestPrivate* m_private;
 };
 
 } // namespace blink
 
 #endif