Added member data to classes to support download resumption.

content/browser/download/save_file_manager.cc

Index: content/browser/download/save_file_manager.cc
diff --git a/content/browser/download/save_file_manager.cc b/content/browser/download/save_file_manager.cc
index 99a9f4921e2be99864456c087e746f6190ecae6f..467df60853920d0fd7b84326c15ff17fb82e45e3 100644
--- a/content/browser/download/save_file_manager.cc
+++ b/content/browser/download/save_file_manager.cc
@@ -213,10 +213,11 @@ void SaveFileManager::SendCancelRequest(int save_id) {
 void SaveFileManager::StartSave(SaveFileCreateInfo* info) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
   DCHECK(info);
-  SaveFile* save_file = new SaveFile(info);
+  // No need to calculate hash.
+  SaveFile* save_file = new SaveFile(info, false);
 
   // TODO(phajdan.jr): We should check the return value and handle errors here.
-  save_file->Initialize(false);  // No need to calculate hash.
+  save_file->Initialize();
 
   DCHECK(!LookupSaveFile(info->save_id));
   save_file_map_[info->save_id] = save_file;