Disable WebNavigationApiTest.ServerRedirect which is flaky on more than Linux.

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/macros.h"
 #include "base/memory/ptr_util.h"
@@ skipping 381 matching lines @@
   ASSERT_TRUE(StartEmbeddedTestServer());
   ASSERT_TRUE(RunExtensionTest("webnavigation/getFrame")) << message_;
 }
 
 IN_PROC_BROWSER_TEST_F(WebNavigationApiTest, ClientRedirect) {
   ASSERT_TRUE(StartEmbeddedTestServer());
   ASSERT_TRUE(RunExtensionTest("webnavigation/clientRedirect"))
       << message_;
 }
 
-#if defined(OS_LINUX)  // http://crbug.com/660288
-#define MAYBE_ServerRedirect DISABLED_ServerRedirect
-#else
-#define MAYBE_ServerRedirect ServerRedirect
-#endif
-IN_PROC_BROWSER_TEST_F(WebNavigationApiTest, MAYBE_ServerRedirect) {
+// http://crbug.com/660288
+IN_PROC_BROWSER_TEST_F(WebNavigationApiTest, DISABLED_ServerRedirect) {
   ASSERT_TRUE(StartEmbeddedTestServer());
   ASSERT_TRUE(RunExtensionTest("webnavigation/serverRedirect"))
       << message_;
 }
 
 IN_PROC_BROWSER_TEST_F(WebNavigationApiTest, Download) {
   base::ScopedTempDir download_directory;
   ASSERT_TRUE(download_directory.CreateUniqueTempDir());
   DownloadPrefs* download_prefs =
       DownloadPrefs::FromBrowserContext(browser()->profile());
@@ skipping 393 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