Send fatal proxy errors to the network delegate.

chrome/browser/net/chrome_network_delegate.cc

-// 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.
 
 #include "chrome/browser/net/chrome_network_delegate.h"
 
 #include "base/logging.h"
+#include "chrome/browser/extensions/extension_proxy_api.h"
 #include "chrome/browser/extensions/extension_webrequest_api.h"
 #include "chrome/browser/net/chrome_url_request_context.h"
+#include "net/base/net_errors.h"
 #include "net/http/http_request_headers.h"
 #include "net/url_request/url_request.h"
 
 namespace {
 
 // Get the event router from the request context. Currently only
 // ChromeURLRequestContexts use a network delegate, so the cast is guaranteed to
 // work.
 const ExtensionIOEventRouter* GetIOEventRouter(
     net::URLRequestContext* context) {
@@ skipping 10 matching lines @@
   ExtensionWebRequestEventRouter::GetInstance()->OnBeforeRequest(
       GetIOEventRouter(request->context()), request->url(), request->method());
 }
 
 void ChromeNetworkDelegate::OnSendHttpRequest(
     net::HttpRequestHeaders* headers) {
   DCHECK(headers);
 
   // TODO(willchan): Add Chrome-side hooks to listen / mutate requests here.
 }
+
+void ChromeNetworkDelegate::OnResponseStarted(net::URLRequest* request) {
+  if (request->status().status() == net::URLRequestStatus::FAILED &&
+      request->status().os_error() == net::ERR_PROXY_CONNECTION_FAILED) {
+    ExtensionProxyEventRouter::GetInstance()->OnProxyError(
+        GetIOEventRouter(request->context()));
+  }
+}