Reject some previuosly-escaped chars in hostnames.

net/proxy/proxy_config_service_linux_unittest.cc

Index: net/proxy/proxy_config_service_linux_unittest.cc
diff --git a/net/proxy/proxy_config_service_linux_unittest.cc b/net/proxy/proxy_config_service_linux_unittest.cc
index ae17d54321461b4c726f2295acf68777a99b0e96..cb6d9621eaa60f900277ffd60bcdb2356253abbc 100644
--- a/net/proxy/proxy_config_service_linux_unittest.cc
+++ b/net/proxy/proxy_config_service_linux_unittest.cc
@@ -1442,21 +1442,6 @@ TEST_F(ProxyConfigServiceLinuxTest, KDEConfigParser) {
       },
 
       {
-          TEST_DESC("Handle strange whitespace"),
-
-          // Input.
-          "[Proxy Settings]\nProxyType [$e] =2\n"
-          "  Proxy Config Script =  http:// foo\n",
-          {},  // env_values
-
-          // Expected result.
-          ProxyConfigService::CONFIG_VALID,
-          false,                // auto_detect
-          GURL("http:// foo"),  // pac_url
-          ProxyRulesExpectation::Empty(),
-      },
-
-      {
           TEST_DESC("Ignore all of a line which is too long"),
 
           // Input.