Bypass data reduction proxy if no handler is found for a 407 error.

components/data_reduction_proxy/common/data_reduction_proxy_headers_unittest.cc

 // 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.
 
 #include "components/data_reduction_proxy/common/data_reduction_proxy_headers.h"
 
 #include "net/http/http_response_headers.h"
 #include "net/proxy/proxy_service.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 319 matching lines @@
     { "HTTP/1.1 502 Bad Gateway\n"
       "Chrome-Proxy: bypass=1799\n",
       net::ProxyService::SHORT_BYPASS,
     },
     { "HTTP/1.1 414 Request-URI Too Long\n",
       net::ProxyService::PROXY_4XX_BYPASS,
     },
     { "HTTP/1.1 414 Request-URI Too Long\n"
       "Via: 1.1 Chrome-Compression-Proxy\n",
       net::ProxyService::BYPASS_EVENT_TYPE_MAX,
+    },
+    { "HTTP/1.1 407 Proxy Authentication Required\n",
+      net::ProxyService::MALFORMED_407_BYPASS,
+    },
+    { "HTTP/1.1 407 Proxy Authentication Required\n"
+      "Proxy-Authenticate: Basic\n"
+      "Via: 1.1 Chrome-Compression-Proxy\n",
+      net::ProxyService::BYPASS_EVENT_TYPE_MAX,
     }
   };
   for (size_t i = 0; i < ARRAYSIZE_UNSAFE(tests); ++i) {
     std::string headers(tests[i].headers);
     HeadersToRaw(&headers);
     scoped_refptr<net::HttpResponseHeaders> parsed(
         new net::HttpResponseHeaders(headers));
     DataReductionProxyInfo chrome_proxy_info;
     EXPECT_EQ(tests[i].expected_result,
               GetDataReductionProxyBypassEventType(parsed, &chrome_proxy_info));
   }
 }
 }  // namespace data_reduction_proxy