Mark ExtensionFileUtil.BackgroundScriptsMustExist as flaky on Windows.

chrome/common/extensions/extension_file_util_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/common/extensions/extension_file_util.h"
 
 #include "base/file_util.h"
 #include "base/json/json_value_serializer.h"
 #include "base/path_service.h"
 #include "base/scoped_temp_dir.h"
@@ skipping 300 matching lines @@
           "}", non_ascii_file.c_str());
   std::string error;
   scoped_refptr<Extension> extension = LoadExtensionManifest(
       kManifest, temp.path(), Extension::LOAD, 0, &error);
   ASSERT_TRUE(extension.get()) << error;
 
   EXPECT_TRUE(extension_file_util::ValidateExtension(extension, &error)) <<
       error;
 }
 
-TEST(ExtensionFileUtil, BackgroundScriptsMustExist) {
+#if defined(OS_WIN)
+// This test is flaky on Windows. http://crbug.com/110279
+#define MAYBE_BackgroundScriptsMustExist FLAKY_BackgroundScriptsMustExist
+#else
+#define MAYBE_BackgroundScriptsMustExist BackgroundScriptsMustExist
+#endif
+TEST(ExtensionFileUtil, MAYBE_BackgroundScriptsMustExist) {
   ScopedTempDir temp;
   ASSERT_TRUE(temp.CreateUniqueTempDir());
 
   scoped_ptr<DictionaryValue> value(new DictionaryValue());
   value->SetString("name", "test");
   value->SetString("version", "1");
   value->SetInteger("manifest_version", 1);
 
   ListValue* scripts = new ListValue();
   scripts->Append(Value::CreateStringValue("foo.js"));
@@ skipping 19 matching lines @@
   EXPECT_FALSE(extension_file_util::ValidateExtension(extension, &error));
   EXPECT_EQ(l10n_util::GetStringFUTF8(
       IDS_EXTENSION_LOAD_BACKGROUND_SCRIPT_FAILED,
       ASCIIToUTF16("http://google.com/foo.js")),
            error);
 }
 
 // TODO(aa): More tests as motivation allows. Maybe steal some from
 // ExtensionService? Many of them could probably be tested here without the
 // MessageLoop shenanigans.