Fix proxy from user policy on shared networks.

chrome/browser/chromeos/proxy_config_service_impl.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 "chrome/browser/chromeos/proxy_config_service_impl.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/location.h"
@@ skipping 122 matching lines @@
       ->network_profile_handler()->GetProfileForPath(network_profile_path);
   if (!profile) {
     VLOG(1) << "Unknown profile_path '" << network_profile_path
             << "'. Ignoring proxy.";
     return true;
   }
   if (profile->type() == NetworkProfile::TYPE_USER) {
     VLOG(1) << "Respect proxy of not-shared networks.";
     return false;
   }
+  if (onc_source == ::onc::ONC_SOURCE_USER_POLICY) {
+    // Note that this case can occur if the network is shared (e.g. ethernet)
+    // but the proxy is determined by user policy.
+    // See https://crbug.com/454966 .
+    VLOG(1) << "Respect proxy from user policy although network is shared.";
+    return false;
+  }
   if (onc_source == ::onc::ONC_SOURCE_DEVICE_POLICY) {
     policy::BrowserPolicyConnectorChromeOS* connector =
         g_browser_process->platform_part()->browser_policy_connector_chromeos();
     const user_manager::User* logged_in_user =
         user_manager::UserManager::Get()->GetLoggedInUser();
     if (connector->GetUserAffiliation(logged_in_user->email()) ==
         policy::USER_AFFILIATION_MANAGED) {
       VLOG(1) << "Respecting proxy for network, as logged-in user belongs to "
               << "the domain the device is enrolled to.";
       return false;
@@ skipping 72 matching lines @@
     if (VLOG_IS_ON(1) && !update_pending()) {  // Update was successful.
       scoped_ptr<base::DictionaryValue> config_dict(effective_config.ToValue());
       VLOG(1) << this << ": Proxy changed: "
               << ProxyPrefs::ConfigStateToDebugString(active_config_state_)
               << ", " << *config_dict;
     }
   }
 }
 
 }  // namespace chromeos