Send fatal proxy errors to the network delegate.

chrome/test/data/extensions/api_test/proxy/events/test.js

Index: chrome/test/data/extensions/api_test/proxy/events/test.js
diff --git a/chrome/test/data/extensions/api_test/proxy/events/test.js b/chrome/test/data/extensions/api_test/proxy/events/test.js
new file mode 100644
index 0000000000000000000000000000000000000000..2a55c8198ed1d89fdce1294090702ff7f739ada6
--- /dev/null
+++ b/chrome/test/data/extensions/api_test/proxy/events/test.js
@@ -0,0 +1,25 @@
+// 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.
+
+// proxy api test
+// browser_tests.exe --gtest_filter=ExtensionApiTest.ProxyEvents
+
+chrome.experimental.proxy.onProxyError.addListener(function (error) {
+  chrome.test.assertTrue(error.fatal);
+  chrome.test.assertEq("net::ERR_PROXY_CONNECTION_FAILED", error.error);
+  chrome.test.assertEq("", error.details);
+  chrome.test.notifyPass();
+});
+
+var rules = {
+  singleProxy: { host: "does.not.exist" }
+};
+
+var config = { rules: rules, mode: "fixed_servers" };
+chrome.experimental.proxy.useCustomProxySettings(config);
+
+var req = new XMLHttpRequest();
+req.open("GET", "http://127.0.0.1/", true);
+req.onload = function () { chrome.test.notifyFail(); }
+req.send(null);