Disable flaky test on windows

chrome/browser/extensions/extension_service_unittest.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 "chrome/browser/extensions/extension_service_unittest.h"
 
 #include <algorithm>
 #include <set>
 #include <vector>
 
@@ skipping 2064 matching lines @@
                                     FilePath(FILE_PATH_LITERAL("web_store")));
   service_->Init();
 
   ExtensionSorting* sorting = service_->extension_prefs()->extension_sorting();
   EXPECT_TRUE(
       sorting->GetPageOrdinal(extension_misc::kWebStoreAppId).IsValid());
   EXPECT_TRUE(
       sorting->GetAppLaunchOrdinal(extension_misc::kWebStoreAppId).IsValid());
 }
 
-TEST_F(ExtensionServiceTest, InstallAppsWithUnlimitedStorage) {
+// Flaky failures on Vista. http://crbug.com/145381
+#if defined(OS_WIN)
+#define MAYBE_InstallAppsWithUnlimitedStorage \
+    DISABLED_InstallAppsWithUnlimitedStorage
+#else
+#define MAYBE_InstallAppsWithUnlimitedStorage InstallAppsWithUnlimitedStorage
+#endif
+
+TEST_F(ExtensionServiceTest, MAYBE_InstallAppsWithUnlimitedStorage) {
   InitializeEmptyExtensionService();
   InitializeRequestContext();
   EXPECT_TRUE(service_->extensions()->is_empty());
 
   int pref_count = 0;
 
   // Install app1 with unlimited storage.
   const Extension* extension =
       PackAndInstallCRX(data_dir_.AppendASCII("app1"), INSTALL_NEW);
   ValidatePrefKeyCount(++pref_count);
@@ skipping 3308 matching lines @@
   // This should NOT trigger an alert.
   provider->UpdateOrAddExtension(hosted_app, "1.0.0.0",
                                  data_dir_.AppendASCII("hosted_app.crx"));
 
   service_->CheckForExternalUpdates();
   loop_.RunAllPending();
 
   ASSERT_TRUE(service_->PopulateExtensionErrorUI(extension_error_ui.get()));
   ASSERT_EQ(1u, extension_error_ui->get_external_extension_ids()->size());
 }