Disable PlatformAppBrowserTest.ComponentExtensionRuntimeReload as its flaky.

chrome/browser/apps/app_browsertest.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 "apps/app_window.h"
 #include "apps/app_window_registry.h"
 #include "apps/launcher.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
@@ skipping 1033 matching lines @@
   app_loaded_observer.Wait();
   ASSERT_TRUE(should_install.seen());
 
   ExtensionTestMessageListener launched_listener("Launched", false);
   OpenApplication(AppLaunchParams(
       browser()->profile(), extension, LAUNCH_CONTAINER_NONE, NEW_WINDOW));
 
   ASSERT_TRUE(launched_listener.WaitUntilSatisfied());
 }
 
+// Flaky: http://crbug.com/407409
 IN_PROC_BROWSER_TEST_F(PlatformAppBrowserTest,
-                       ComponentExtensionRuntimeReload) {
+                       DISABLED_ComponentExtensionRuntimeReload) {
   // Ensure that we wait until the background page is run (to register the
   // OnLaunched listener) before trying to open the application. This is similar
   // to LoadAndLaunchPlatformApp, but we want to load as a component extension.
   content::WindowedNotificationObserver app_loaded_observer(
       content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME,
       content::NotificationService::AllSources());
 
   const Extension* extension = LoadExtensionAsComponent(
       test_data_dir_.AppendASCII("platform_apps").AppendASCII("component"));
   ASSERT_TRUE(extension);
@@ skipping 254 matching lines @@
         LoadAndLaunchPlatformApp("reinstall_data_cleanup", "Launched");
     ASSERT_TRUE(extension);
     ASSERT_EQ(extension_id, extension->id());
 
     ExtensionApiTest::ResultCatcher result_catcher;
     EXPECT_TRUE(result_catcher.GetNextResult());
   }
 }
 
 }  // namespace extensions