Revert 227318 "Clean up ResourceHandler API."

content/browser/download/download_resource_handler.h

Index: content/browser/download/download_resource_handler.h
===================================================================
--- content/browser/download/download_resource_handler.h	(revision 227594)
+++ content/browser/download/download_resource_handler.h	(working copy)
@@ -67,7 +67,7 @@
   // Create a new buffer, which will be handed to the download thread for file
   // writing and deletion.
   virtual bool OnWillRead(int request_id,
-                          scoped_refptr<net::IOBuffer>* buf,
+                          net::IOBuffer** buf,
                           int* buf_size,
                           int min_size) OVERRIDE;
 
@@ -105,6 +105,7 @@
   uint32 download_id_;
   std::string content_disposition_;
   int64 content_length_;
+  net::URLRequest* request_;
   // This is read only on the IO thread, but may only
   // be called on the UI thread.
   DownloadUrlParameters::OnStartedCallback started_cb_;