Expire appcaches that fail to update for "too long".

content/browser/appcache/mock_appcache_storage.h

Index: content/browser/appcache/mock_appcache_storage.h
diff --git a/content/browser/appcache/mock_appcache_storage.h b/content/browser/appcache/mock_appcache_storage.h
index 7803ff7cc5ad7c9f4b52a051cab06aa35ee9eab0..25c95846e45c10e29458150bd74a02af3d474571 100644
--- a/content/browser/appcache/mock_appcache_storage.h
+++ b/content/browser/appcache/mock_appcache_storage.h
@@ -67,6 +67,7 @@ class MockAppCacheStorage : public AppCacheStorage {
   void MakeGroupObsolete(AppCacheGroup* group,
                          Delegate* delegate,
                          int response_code) override;
+  void StoreEvictionTimes(AppCacheGroup* group) override;
   AppCacheResponseReader* CreateResponseReader(const GURL& manifest_url,
                                                int64 group_id,
                                                int64 response_id) override;
@@ -89,6 +90,8 @@ class MockAppCacheStorage : public AppCacheStorage {
   typedef base::hash_map<int64, scoped_refptr<AppCache> > StoredCacheMap;
   typedef std::map<GURL, scoped_refptr<AppCacheGroup> > StoredGroupMap;
   typedef std::set<int64> DoomedResponseIds;
+  typedef std::map<int64, std::pair<base::Time, base::Time>>
+      StoredEvictionTimesMap;
 
   void ProcessGetAllInfo(scoped_refptr<DelegateReference> delegate_ref);
   void ProcessLoadCache(
@@ -194,6 +197,7 @@ class MockAppCacheStorage : public AppCacheStorage {
 
   StoredCacheMap stored_caches_;
   StoredGroupMap stored_groups_;
+  StoredEvictionTimesMap stored_eviction_times_;
   DoomedResponseIds doomed_response_ids_;
   scoped_ptr<AppCacheDiskCache> disk_cache_;
   std::deque<base::Closure> pending_tasks_;