Add support to ProxyService for downloading a PAC script on behalf of the Pro...

net/proxy/proxy_resolver_winhttp.cc

 // Copyright (c) 2006-2008 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_resolver_winhttp.h"
 
 #include <windows.h>
 #include <winhttp.h>
 
 #include "base/histogram.h"
@@ skipping 24 matching lines @@
 }
 
 static void FreeInfo(WINHTTP_PROXY_INFO* info) {
   if (info->lpszProxy)
     GlobalFree(info->lpszProxy);
   if (info->lpszProxyBypass)
     GlobalFree(info->lpszProxyBypass);
 }
 
 ProxyResolverWinHttp::ProxyResolverWinHttp()
-    : session_handle_(NULL) {
+    : ProxyResolver(true), session_handle_(NULL) {
 }
 
 ProxyResolverWinHttp::~ProxyResolverWinHttp() {
   CloseWinHttpSession();
 }
 
 int ProxyResolverWinHttp::GetProxyForURL(const GURL& query_url,
                                          const GURL& pac_url,
                                          ProxyInfo* results) {
   // If we don't have a WinHTTP session, then create a new one.
@@ skipping 97 matching lines @@
 
 void ProxyResolverWinHttp::CloseWinHttpSession() {
   if (session_handle_) {
     WinHttpCloseHandle(session_handle_);
     session_handle_ = NULL;
   }
 }
 
 }  // namespace net