Support redirectUrl at onHeadersReceived in WebRequest / DWR API

net/http/http_response_headers.h

Index: net/http/http_response_headers.h
diff --git a/net/http/http_response_headers.h b/net/http/http_response_headers.h
index deba3b6d974fd45c42f20d8b7f94b14182d1573f..2707316395eb14c46ed091003f40799c62003534 100644
--- a/net/http/http_response_headers.h
+++ b/net/http/http_response_headers.h
@@ -15,6 +15,7 @@
 #include "net/base/net_export.h"
 #include "net/base/net_log.h"
 #include "net/http/http_version.h"
+#include "url/gurl.h"
 
 class Pickle;
 class PickleIterator;
@@ -190,6 +191,16 @@ class NET_EXPORT HttpResponseHeaders
   // redirect.
   static bool IsRedirectResponseCode(int response_code);
 
+  // Replace the Location header and HTTP status line, then mark the redirect
+  // URL as safe, i.e. assume that the redirect is always allowed.
+  void SetSafeRedirect(GURL new_url);
+
+  // Whether |location| matches a redirect target that has been marked as safe.
+  bool IsSafeRedirect(const GURL& location) const;
+
+  // Whether a safe redirection target has been set.
+  bool HasSafeRedirect() const;
+
   // Returns true if the response cannot be reused without validation.  The
   // result is relative to the current_time parameter, which is a parameter to
   // support unit testing.  The request_time parameter indicates the time at
@@ -397,6 +408,9 @@ class NET_EXPORT HttpResponseHeaders
   // This is the parsed HTTP response code.
   int response_code_;
 
+  // A redirect target that has explicitly been marked as safe.
+  GURL allowed_unsafe_redirect_url_;
+
   // The normalized http version (consistent with what GetStatusLine() returns).
   HttpVersion http_version_;