Introduce Response.redirect attribute and add LayoutTest.

third_party/WebKit/Source/modules/fetch/Response.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef Response_h
 #define Response_h
 
 #include "bindings/core/v8/Dictionary.h"
 #include "bindings/core/v8/ScriptValue.h"
 #include "bindings/core/v8/ScriptWrappable.h"
@@ skipping 42 matching lines @@
   static Response* redirect(ExecutionContext*,
                             const String& url,
                             unsigned short status,
                             ExceptionState&);
 
   const FetchResponseData* response() const { return m_response; }
 
   // From Response.idl:
   String type() const;
   String url() const;
+  bool redirected() const;
   unsigned short status() const;
   bool ok() const;
   String statusText() const;
   Headers* headers() const;
 
   // From Response.idl:
   // This function must be called with entering an appropriate V8 context.
   Response* clone(ScriptState*, ExceptionState&);
 
   // ScriptWrappable
@@ skipping 35 matching lines @@
   void installBody();
   void refreshBody(ScriptState*);
 
   const Member<FetchResponseData> m_response;
   const Member<Headers> m_headers;
 };
 
 }  // namespace blink
 
 #endif  // Response_h