PageLanguageDetectionTest has the failure rate of 5 - 6% on XP/Vista. Mark it...

chrome/browser/browser_browsertest.cc

 // Copyright (c) 2010 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 <string>
 
 #include "app/l10n_util.h"
 #include "base/i18n/rtl.h"
 #include "base/file_path.h"
 #include "base/sys_info.h"
@@ skipping 478 matching lines @@
   PhantomTabTest();
 
   Extension* extension = GetExtension();
   UninstallExtension(extension->id());
 
   // The uninstall should have removed the tab.
   ASSERT_EQ(1, browser()->tab_count());
 }
 #endif  // !defined(OS_MACOSX)
 
+#if defined(OS_WIN)
+// http://crbug.com/46198. On XP/Vista, the failure rate is 5 ~ 6%.
+#define MAYBE_PageLanguageDetection FLAKY_PageLanguageDetection
+#else
+#define MAYBE_PageLanguageDetection PageLanguageDetection
+#endif
 // Tests that the CLD (Compact Language Detection) works properly.
-IN_PROC_BROWSER_TEST_F(BrowserTest, PageLanguageDetection) {
+IN_PROC_BROWSER_TEST_F(BrowserTest, MAYBE_PageLanguageDetection) {
   static const wchar_t kDocRoot[] = L"chrome/test/data";
   scoped_refptr<HTTPTestServer> server(
         HTTPTestServer::CreateServer(kDocRoot, NULL));
   ASSERT_TRUE(NULL != server.get());
 
   TabContents* current_tab = browser()->GetSelectedTabContents();
 
   // Navigate to a page in English.
   ui_test_utils::WindowedNotificationObserverWithDetails<TabContents,
                                                          std::string>
@@ skipping 361 matching lines @@
   // Open the app.  Focus should move to the panel.
   Browser::OpenApplication(profile_, extension_app_->id());
   ASSERT_EQ(extra_browser, BrowserList::GetLastActive());
   ASSERT_EQ(2, extra_browser->tab_count());
 
   browser()->window()->Show();
   Browser::OpenApplication(profile_, extension_app_->id());
   ASSERT_EQ(browser(), BrowserList::GetLastActive());
   ASSERT_EQ(2, browser()->tab_count());
 }