Add support for 308 permanent redirects.

net/http/http_response_headers_unittest.cc

 // Copyright (c) 2012 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.
 
 #include <algorithm>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/pickle.h"
 #include "base/time/time.h"
@@ skipping 794 matching lines @@
       "date: Wed, 28 Nov 2007 00:40:11 GMT\n"
       "last-modified: Wed, 28 Nov 2007 00:40:10 GMT\n"
       "\n",
       true
     },
     // cached permanent redirect
     { "HTTP/1.1 301 Moved Permanently\n"
       "\n",
       false
     },
+    // another cached permanent redirect
+    { "HTTP/1.1 308 Permanent Redirect\n"
+      "\n",
+      false
+    },
     // cached redirect: not reusable even though by default it would be
     { "HTTP/1.1 300 Multiple Choices\n"
       "Cache-Control: no-cache\n"
       "\n",
       true
     },
     // cached forever by default
     { "HTTP/1.1 410 Gone\n"
       "\n",
       false
@@ skipping 1418 matching lines @@
     std::string headers(tests[i].headers);
     HeadersToRaw(&headers);
     scoped_refptr<net::HttpResponseHeaders> parsed(
         new net::HttpResponseHeaders(headers));
     net::HttpResponseHeaders::DataReductionProxyInfo chrome_proxy_info;
     EXPECT_EQ(tests[i].expected_result,
               parsed->GetDataReductionProxyBypassEventType(&chrome_proxy_info));
   }
 }
 #endif  // defined(SPDY_PROXY_AUTH_ORIGIN)