Allow ProxyConfigService to report "no configuration set"

chrome/browser/net/resolve_proxy_msg_helper_unittest.cc

Index: chrome/browser/net/resolve_proxy_msg_helper_unittest.cc
diff --git a/chrome/browser/net/resolve_proxy_msg_helper_unittest.cc b/chrome/browser/net/resolve_proxy_msg_helper_unittest.cc
index 3bdb695017f281070b216c01113dae2367a047bf..216bfe5ad252b8ed8b9c790ee0e55d7849b59d4f 100644
--- a/chrome/browser/net/resolve_proxy_msg_helper_unittest.cc
+++ b/chrome/browser/net/resolve_proxy_msg_helper_unittest.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.
 
@@ -14,9 +14,9 @@ class MockProxyConfigService : public net::ProxyConfigService {
  public:
   virtual void AddObserver(Observer* observer) {}
   virtual void RemoveObserver(Observer* observer) {}
-  virtual bool GetLatestProxyConfig(net::ProxyConfig* results) {
+  virtual ConfigAvailability GetLatestProxyConfig(net::ProxyConfig* results) {
     *results = net::ProxyConfig::CreateFromCustomPacURL(GURL("http://pac"));
-    return true;
+    return CONFIG_VALID;
   }
 };