Linux: allow proxy PAC file configurations that use just a file path without a file:// prefix.

net/proxy/proxy_config_service_linux_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 "net/proxy/proxy_config_service_linux.h"
 
 #include <map>
 #include <string>
 #include <vector>
 
@@ skipping 1080 matching lines @@
       {},                                      // env_values
 
       // Expected result.
       ProxyConfigService::CONFIG_VALID,
       false,                         // auto_detect
       GURL("http://wpad/wpad.dat"),  // pac_url
       ProxyRulesExpectation::Empty(),
     },
 
     {
+      TEST_DESC("Valid PAC file without file://"),
+
+      // Input.
+      "[Proxy Settings]\nProxyType=2\n"
+          "Proxy Config Script=/wpad/wpad.dat\n",
+      {},                                      // env_values
+
+      // Expected result.
+      ProxyConfigService::CONFIG_VALID,
+      false,                         // auto_detect
+      GURL("file:///wpad/wpad.dat"),  // pac_url
+      ProxyRulesExpectation::Empty(),
+    },
+
+    {
       TEST_DESC("Per-scheme proxy rules"),
 
       // Input.
       "[Proxy Settings]\nProxyType=1\nhttpProxy=www.google.com\n"
           "httpsProxy=www.foo.com\nftpProxy=ftp.foo.com\n",
       {},                                      // env_values
 
       // Expected result.
       ProxyConfigService::CONFIG_VALID,
       false,                                   // auto_detect
@@ skipping 481 matching lines @@
     ProxyConfig config;
     sync_config_getter.SetupAndInitialFetch();
     EXPECT_EQ(ProxyConfigService::CONFIG_VALID,
               sync_config_getter.SyncGetLatestProxyConfig(&config));
     EXPECT_TRUE(config.auto_detect());
     EXPECT_EQ(GURL(), config.pac_url());
   }
 }
 
 }  // namespace net