Make DownloadHistory observe manager, items

content/browser/download/download_item_factory.h

Index: content/browser/download/download_item_factory.h
diff --git a/content/browser/download/download_item_factory.h b/content/browser/download/download_item_factory.h
index db32503d1355da6c5deb87960823c56ff61f4ac0..348a02d31ad3ab7e06837e1d6c9ed3d0a5f8a5da 100644
--- a/content/browser/download/download_item_factory.h
+++ b/content/browser/download/download_item_factory.h
@@ -13,6 +13,7 @@
 
 #include "base/memory/scoped_ptr.h"
 #include "content/public/browser/download_id.h"
+#include "content/public/browser/download_item.h"
 
 struct DownloadCreateInfo;
 
@@ -22,11 +23,6 @@ class DownloadRequestHandleInterface;
 class FilePath;
 class GURL;
 
-namespace content {
-class DownloadItem;
-struct DownloadPersistentStoreInfo;
-}
-
 namespace net {
 class BoundNetLog;
 }
@@ -40,7 +36,15 @@ public:
   virtual DownloadItemImpl* CreatePersistedItem(
       DownloadItemImplDelegate* delegate,
       content::DownloadId download_id,
-      const content::DownloadPersistentStoreInfo& info,
+      const FilePath& path,
+      const GURL& url,
+      const GURL& referrer_url,
+      const base::Time& start_time,
+      const base::Time& end_time,
+      int64 received_bytes,
+      int64 total_bytes,
+      content::DownloadItem::DownloadState state,
+      bool opened,
       const net::BoundNetLog& bound_net_log) = 0;
 
   virtual DownloadItemImpl* CreateActiveItem(