More groundwork for flat file based response storage.

webkit/appcache/appcache_storage.h

Index: webkit/appcache/appcache_storage.h
===================================================================
--- webkit/appcache/appcache_storage.h	(revision 106339)
+++ webkit/appcache/appcache_storage.h	(working copy)
@@ -66,7 +66,7 @@
     virtual void OnMainResponseFound(
         const GURL& url, const AppCacheEntry& entry,
         const GURL& fallback_url, const AppCacheEntry& fallback_entry,
-        int64 cache_id, const GURL& mainfest_url) {}
+        int64 cache_id, int64 group_id, const GURL& mainfest_url) {}
   };
 
   explicit AppCacheStorage(AppCacheService* service);
@@ -98,7 +98,8 @@
   // immediately without returning to the message loop. If the load fails,
   // the delegate will be called back with a NULL pointer.
   virtual void LoadResponseInfo(
-      const GURL& manifest_url, int64 response_id, Delegate* delegate);
+      const GURL& manifest_url, int64 group_id, int64 response_id,
+      Delegate* delegate);
 
   // Schedules a group and its newest complete cache to be initially stored or
   // incrementally updated with new changes. Upon completion the delegate
@@ -150,12 +151,12 @@
 
   // Creates a reader to read a response from storage.
   virtual AppCacheResponseReader* CreateResponseReader(
-      const GURL& manifest_url, int64 response_id) = 0;
+      const GURL& manifest_url, int64 group_id, int64 response_id) = 0;
 
   // Creates a writer to write a new response to storage. This call
   // establishes a new response id.
   virtual AppCacheResponseWriter* CreateResponseWriter(
-      const GURL& manifest_url) = 0;
+      const GURL& manifest_url, int64 group_id) = 0;
 
   // Schedules the lazy deletion of responses and saves the ids
   // persistently such that the responses will be deleted upon restart
@@ -229,12 +230,13 @@
   // multiple callers.
   class ResponseInfoLoadTask {
    public:
-    ResponseInfoLoadTask(const GURL& manifest_url, int64 response_id,
-                         AppCacheStorage* storage);
+    ResponseInfoLoadTask(const GURL& manifest_url, int64 group_id,
+                         int64 response_id, AppCacheStorage* storage);
     ~ResponseInfoLoadTask();
 
     int64 response_id() const { return response_id_; }
     const GURL& manifest_url() const { return manifest_url_; }
+    int64 group_id() const { return group_id_; }
 
     void AddDelegate(DelegateReference* delegate_reference) {
       delegates_.push_back(delegate_reference);
@@ -247,6 +249,7 @@
 
     AppCacheStorage* storage_;
     GURL manifest_url_;
+    int64 group_id_;
     int64 response_id_;
     scoped_ptr<AppCacheResponseReader> reader_;
     DelegateReferenceVector delegates_;
@@ -272,12 +275,12 @@
   }
 
   ResponseInfoLoadTask* GetOrCreateResponseInfoLoadTask(
-      const GURL& manifest_url, int64 response_id) {
+      const GURL& manifest_url, int64 group_id, int64 response_id) {
     PendingResponseInfoLoads::iterator iter =
         pending_info_loads_.find(response_id);
     if (iter != pending_info_loads_.end())
       return iter->second;
-    return new ResponseInfoLoadTask(manifest_url, response_id, this);
+    return new ResponseInfoLoadTask(manifest_url, group_id, response_id, this);
   }
 
   // Should only be called when creating a new response writer.