Send fatal proxy errors to the network delegate.

chrome/browser/net/chrome_network_delegate.cc

Index: chrome/browser/net/chrome_network_delegate.cc
diff --git a/chrome/browser/net/chrome_network_delegate.cc b/chrome/browser/net/chrome_network_delegate.cc
index 0c9272148c20c888c9b767246b50207a0db3a2e5..ce79045d8e39d92415395c84b89860f79d10e965 100644
--- a/chrome/browser/net/chrome_network_delegate.cc
+++ b/chrome/browser/net/chrome_network_delegate.cc
@@ -1,12 +1,14 @@
-// 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"
 
@@ -21,6 +23,21 @@ const ExtensionIOEventRouter* GetIOEventRouter(
       extension_io_event_router();
 }
 
+// If the |request| failed due to problems with a proxy, forward the error to
+// the proxy extension API.
+void ForwardProxyErrors(net::URLRequest* request) {
+  if (request->status().status() == net::URLRequestStatus::FAILED) {
+    switch (request->status().os_error()) {
+      case net::ERR_PROXY_AUTH_UNSUPPORTED:
+      case net::ERR_PROXY_CONNECTION_FAILED:
+      case net::ERR_TUNNEL_CONNECTION_FAILED:
+        ExtensionProxyEventRouter::GetInstance()->OnProxyError(
+            GetIOEventRouter(request->context()),
+            request->status().os_error());
+    }
+  }
+}
+
 }  // namespace
 
 ChromeNetworkDelegate::ChromeNetworkDelegate() {}
@@ -37,3 +54,12 @@ void ChromeNetworkDelegate::OnSendHttpRequest(
 
   // TODO(willchan): Add Chrome-side hooks to listen / mutate requests here.
 }
+
+void ChromeNetworkDelegate::OnResponseStarted(net::URLRequest* request) {
+  ForwardProxyErrors(request);
+}
+
+void ChromeNetworkDelegate::OnReadCompleted(net::URLRequest* request,
+                                            int bytes_read) {
+  ForwardProxyErrors(request);
+}