Implement a poor man's PostAfterStartupTask() function.

content/browser/appcache/appcache_update_job.h

Index: content/browser/appcache/appcache_update_job.h
diff --git a/content/browser/appcache/appcache_update_job.h b/content/browser/appcache/appcache_update_job.h
index 4d2d896ea74485cbb2757e145de08748a547eca7..48f9bade98d0d7e7af1e321f2e15a9c80a6de35b 100644
--- a/content/browser/appcache/appcache_update_job.h
+++ b/content/browser/appcache/appcache_update_job.h
@@ -14,6 +14,7 @@
 #include "base/gtest_prod_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/time/time.h"
+#include "base/timer/timer.h"
 #include "content/browser/appcache/appcache.h"
 #include "content/browser/appcache/appcache_host.h"
 #include "content/browser/appcache/appcache_response.h"
@@ -161,6 +162,8 @@ class CONTENT_EXPORT AppCacheUpdateJob
     scoped_ptr<AppCacheResponseWriter> response_writer_;
   };  // class URLFetcher
 
+  void DelayableStart();
+
   AppCacheResponseWriter* CreateResponseWriter();
 
   // Methods for AppCacheStorage::Delegate.
@@ -335,6 +338,8 @@ class CONTENT_EXPORT AppCacheUpdateJob
   StoredState stored_state_;
 
   AppCacheStorage* storage_;
+  base::OneShotTimer<AppCacheUpdateJob> delayed_start_timer_;
+  base::WeakPtrFactory<AppCacheUpdateJob> weak_factory_;
 
   FRIEND_TEST_ALL_PREFIXES(content::AppCacheGroupTest, QueueUpdate);