[Activity Log] Enable end to end tests on windows.

chrome/browser/extensions/api/activity_log_private/activity_log_private_apitest.cc

 // Copyright 2013 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 "chrome/browser/extensions/activity_log/activity_log.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension_builder.h"
@@ skipping 13 matching lines @@
   virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE {
     ExtensionApiTest::SetUpCommandLine(command_line);
     saved_cmdline_ = *CommandLine::ForCurrentProcess();
     command_line->AppendSwitch(switches::kEnableExtensionActivityLogging);
   }
 
  private:
   CommandLine saved_cmdline_;
 };
 
-#if defined(OS_WIN)
-// TODO(karenlees): test flaky on windows. See Bug: crbug.com/245594
-#define MAYBE_TriggerEvent DISABLED_TriggerEvent
-#else
-#define MAYBE_TriggerEvent TriggerEvent
-#endif
-
 // The test extension sends a message to its 'friend'. The test completes
 // if it successfully sees the 'friend' receive the message.
-IN_PROC_BROWSER_TEST_F(ActivityLogApiTest, MAYBE_TriggerEvent) {
+IN_PROC_BROWSER_TEST_F(ActivityLogApiTest, TriggerEvent) {
   ActivityLog::GetInstance(profile())->SetWatchdogAppActive(true);
   host_resolver()->AddRule("*", "127.0.0.1");
   const Extension* friend_extension = LoadExtensionIncognito(
       test_data_dir_.AppendASCII("activity_log_private/friend"));
   ASSERT_TRUE(friend_extension);
   ASSERT_TRUE(RunExtensionTest("activity_log_private/test"));
   ActivityLog::GetInstance(profile())->SetWatchdogAppActive(false);
 }
 
 }  // namespace extensions