Refactored app cache clear on exit code to happen in the object owning the files.

chrome/chrome_tests.gypi

Index: chrome/chrome_tests.gypi
diff --git a/chrome/chrome_tests.gypi b/chrome/chrome_tests.gypi
index 71fa4c0364ed8c6190c40b6b8257114f0b8a0779..8576111adf69d71c18cfa41cc27e7df5aafddae3 100644
--- a/chrome/chrome_tests.gypi
+++ b/chrome/chrome_tests.gypi
@@ -1,4 +1,4 @@
-# Copyright (c) 2010 The Chromium Authors. All rights reserved.
+# Copyright (c) 2011 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.
 
@@ -1017,6 +1017,7 @@
         'browser/about_flags_unittest.cc',
         'browser/accessibility/browser_accessibility_mac_unittest.mm',
         'browser/accessibility/browser_accessibility_win_unittest.cc',
+        'browser/appcache/chrome_appcache_service_unittest.cc',
         'browser/app_controller_mac_unittest.mm',
         'browser/autocomplete_history_manager_unittest.cc',
         'browser/autocomplete/autocomplete_edit_unittest.cc',