AppCaches which belong to hosted apps are not protected from deletion

chrome/chrome_tests.gypi

 # 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.
 
 {
   'variables' : {
     'pyautolib_sources': [
       'app/chrome_command_ids.h',
       'app/chrome_dll_resource.h',
       'common/automation_constants.h',
@@ skipping 194 matching lines @@
         '../content/browser/tab_contents/test_tab_contents.h',
         '../content/common/notification_observer_mock.cc',
         '../content/common/notification_observer_mock.h',
         '../content/common/test_url_constants.cc',
         '../content/common/test_url_constants.h',
         '../content/common/test_url_fetcher_factory.cc',
         '../content/common/test_url_fetcher_factory.h',
         '../content/renderer/mock_content_renderer_client.cc',
         '../ui/gfx/image/image_unittest_util.h',
         '../ui/gfx/image/image_unittest_util.cc',
+        '../webkit/appcache/appcache_test_helper.cc',
+        '../webkit/appcache/appcache_test_helper.h',
+        '../webkit/quota/mock_special_storage_policy.cc',
+        '../webkit/quota/mock_special_storage_policy.h',
       ],
       'conditions': [
         ['chromeos==0', {
           'sources/': [
             ['exclude', '^browser/chromeos'],
           ],
         }],
         ['toolkit_uses_gtk == 1', {
           'dependencies': [
             '../build/linux/system.gyp:gtk',
@@ skipping 3948 matching lines @@
               # Use outputs of this action as inputs for the main target build.
               # Seems as a misnomer but makes this happy on Linux (scons).
               'process_outputs_as_sources': 1,
             },
           ],  # 'actions'
         },
       ]
     }],  # 'coverage!=0'
   ],  # 'conditions'
 }