Disable BackgroundKeepaliveIdle test due to flaky ASAN failures.

chrome/browser/extensions/app_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/path_service.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/background/background_contents_service.h"
 #include "chrome/browser/background/background_contents_service_factory.h"
 #include "chrome/browser/background/background_mode_manager.h"
@@ skipping 598 matching lines @@
   manager->SetKeepaliveImpulseCallbackForTesting(
       extensions::ProcessManager::ImpulseCallbackForTesting());
 }
 
 // Verify that nacl modules that go idle will not send keepalive impulses.
 // Disabled on windows due to Win XP failures:
 // DesktopWindowTreeHostWin::HandleCreate not implemented. crbug.com/331954
 #if defined(OS_WIN)
 #define MAYBE_BackgroundKeepaliveIdle DISABLED_BackgroundKeepaliveIdle
 #else
-#define MAYBE_BackgroundKeepaliveIdle BackgroundKeepaliveIdle
+// ASAN errors appearing: https://crbug.com/332440
+#define MAYBE_BackgroundKeepaliveIdle DISABLED_BackgroundKeepaliveIdle
 #endif
 IN_PROC_BROWSER_TEST_F(AppBackgroundPageNaClTest,
                        MAYBE_BackgroundKeepaliveIdle) {
   ExtensionTestMessageListener nacl_modules_loaded("nacl_modules_loaded", true);
   LaunchTestingApp();
   extensions::ProcessManager* manager =
     extensions::ExtensionSystem::Get(browser()->profile())->process_manager();
   ImpulseCallbackCounter idle_impulse_counter(extension()->id());
   EXPECT_TRUE(nacl_modules_loaded.WaitUntilSatisfied());
 
   manager->SetKeepaliveImpulseDecrementCallbackForTesting(
       idle_impulse_counter.SetGoalAndGetCallback(1));
   nacl_modules_loaded.Reply("be idle");
   idle_impulse_counter.Wait();
 
   // Clear callback to free reference to message loop in ImpulseCallbackCounter.
   manager->SetKeepaliveImpulseDecrementCallbackForTesting(
       extensions::ProcessManager::ImpulseCallbackForTesting());
 }