Disable all the browser_tests that are flaking more than 5% of the time on trybots.

chrome/browser/extensions/lazy_background_page_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 "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/scoped_observer.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ skipping 319 matching lines @@
   EXPECT_TRUE(IsBackgroundPageAlive(last_loaded_extension_id()));
 
   // Navigate away from the NTP, which should close the event page.
   ui_test_utils::NavigateToURL(browser(), GURL("about:blank"));
   lazybg.Wait();
 
   // Lazy Background Page has been shut down.
   EXPECT_FALSE(IsBackgroundPageAlive(last_loaded_extension_id()));
 }
 
-// See crbug.com/248437
-#if defined(OS_WIN)
-#define MAYBE_IncognitoSplitMode DISABLED_IncognitoSplitMode
-#else
-#define MAYBE_IncognitoSplitMode IncognitoSplitMode
-#endif
-
 // Tests that an incognito split mode extension gets 2 lazy background pages,
 // and they each load and unload at the proper times.
-IN_PROC_BROWSER_TEST_F(LazyBackgroundPageApiTest, MAYBE_IncognitoSplitMode) {
+// See crbug.com/248437
+IN_PROC_BROWSER_TEST_F(LazyBackgroundPageApiTest, DISABLED_IncognitoSplitMode) {
   // Open incognito window.
   Browser* incognito_browser = ui_test_utils::OpenURLOffTheRecord(
       browser()->profile(), GURL("about:blank"));
 
   // Load the extension with incognito enabled.
   {
     LoadedIncognitoObserver loaded(browser()->profile());
     base::FilePath extdir = test_data_dir_.AppendASCII("lazy_background_page").
         AppendASCII("incognito_split");
     ASSERT_TRUE(LoadExtensionIncognito(extdir));
@@ skipping 215 matching lines @@
 
 // Tests that the lazy background page will be unloaded if the onSuspend event
 // handler calls an API function such as chrome.storage.local.set().
 // See: http://crbug.com/296834
 IN_PROC_BROWSER_TEST_F(LazyBackgroundPageApiTest, OnSuspendUseStorageApi) {
   EXPECT_TRUE(LoadExtensionAndWait("on_suspend"));
 }
 
 // TODO: background page with timer.
 // TODO: background page that interacts with popup.