Disable flaky WebNavigationApiTest.Failures on Windows.

chrome/browser/extensions/api/web_navigation/web_navigation_apitest.cc

 // Copyright (c) 2012 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 <list>
 #include <set>
 
 #include "base/files/scoped_temp_dir.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 445 matching lines @@
   ASSERT_TRUE(StartEmbeddedTestServer());
   ASSERT_TRUE(RunExtensionTest("webnavigation/referenceFragment"))
       << message_;
 }
 
 IN_PROC_BROWSER_TEST_F(WebNavigationApiTest, SimpleLoad) {
   ASSERT_TRUE(StartEmbeddedTestServer());
   ASSERT_TRUE(RunExtensionTest("webnavigation/simpleLoad")) << message_;
 }
 
-IN_PROC_BROWSER_TEST_F(WebNavigationApiTest, Failures) {
+#if defined(OS_WIN)  // http://crbug.com/477840
+#define MAYBE_Failures DISABLED_Failures
+#else
+#define MAYBE_Failures Failures
+#endif
+IN_PROC_BROWSER_TEST_F(WebNavigationApiTest, MAYBE_Failures) {
   ASSERT_TRUE(StartEmbeddedTestServer());
   ASSERT_TRUE(RunExtensionTest("webnavigation/failures")) << message_;
 }
 
 IN_PROC_BROWSER_TEST_F(WebNavigationApiTest, FilteredTest) {
   ASSERT_TRUE(StartEmbeddedTestServer());
   ASSERT_TRUE(RunExtensionTest("webnavigation/filtered")) << message_;
 }
 
 IN_PROC_BROWSER_TEST_F(WebNavigationApiTest, UserAction) {
@@ skipping 276 matching lines @@
           "extensions/api_test/webnavigation/crash/b.html",
       embedded_test_server()->port()));
   ui_test_utils::NavigateToURL(browser(), url);
 
   ASSERT_TRUE(catcher.GetNextResult()) << catcher.message();
 }
 
 #endif
 
 }  // namespace extensions