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

chrome/browser/extensions/extension_service_unittest.cc

Index: chrome/browser/extensions/extension_service_unittest.cc
diff --git a/chrome/browser/extensions/extension_service_unittest.cc b/chrome/browser/extensions/extension_service_unittest.cc
index 7f052b68590f6bd8ffad9777ee9a4bece8b9f737..420e66d5973314c76fda172e83c47d8d9dee0911 100644
--- a/chrome/browser/extensions/extension_service_unittest.cc
+++ b/chrome/browser/extensions/extension_service_unittest.cc
@@ -312,7 +312,8 @@ class ExtensionTestingProfile : public TestingProfile {
           NewRunnableMethod(appcache_service_.get(),
                             &ChromeAppCacheService::InitializeOnIOThread,
                             GetPath(), IsOffTheRecord(),
-                            make_scoped_refptr(GetHostContentSettingsMap())));
+                            make_scoped_refptr(GetHostContentSettingsMap()),
+                            false));
     }
     return appcache_service_;
   }