base::Bind: Convert net/proxy.

net/proxy/proxy_resolver_winhttp.h

Index: net/proxy/proxy_resolver_winhttp.h
diff --git a/net/proxy/proxy_resolver_winhttp.h b/net/proxy/proxy_resolver_winhttp.h
index c565808ae1e1980b8c40424021c2d7eebcc9ae70..f99ce02f0fbc6f5f9f8b32a011cd522d3d3c5fe5 100644
--- a/net/proxy/proxy_resolver_winhttp.h
+++ b/net/proxy/proxy_resolver_winhttp.h
@@ -24,7 +24,7 @@ class NET_EXPORT_PRIVATE ProxyResolverWinHttp : public ProxyResolver {
   // ProxyResolver implementation:
   virtual int GetProxyForURL(const GURL& url,
                              ProxyInfo* results,
-                             OldCompletionCallback* /*callback*/,
+                             const net::CompletionCallback& /*callback*/,
                              RequestHandle* /*request*/,
                              const BoundNetLog& /*net_log*/) OVERRIDE;
   virtual void CancelRequest(RequestHandle request) OVERRIDE;
@@ -38,7 +38,7 @@ class NET_EXPORT_PRIVATE ProxyResolverWinHttp : public ProxyResolver {
 
   virtual int SetPacScript(
       const scoped_refptr<ProxyResolverScriptData>& script_data,
-      OldCompletionCallback* /*callback*/) OVERRIDE;
+      const net::CompletionCallback& /*callback*/) OVERRIDE;
 
  private:
   bool OpenWinHttpSession();