Clean up ResourceHandler API.

content/browser/loader/redirect_to_file_resource_handler.h

Index: content/browser/loader/redirect_to_file_resource_handler.h
diff --git a/content/browser/loader/redirect_to_file_resource_handler.h b/content/browser/loader/redirect_to_file_resource_handler.h
index 1af25df348c5a19d59b5f7d068632d5440ef8ad3..89b1bdfd1f557bb309e4beff8bc224cb65ac660c 100644
--- a/content/browser/loader/redirect_to_file_resource_handler.h
+++ b/content/browser/loader/redirect_to_file_resource_handler.h
@@ -44,7 +44,7 @@ class RedirectToFileResourceHandler : public LayeredResourceHandler {
                            const GURL& url,
                            bool* defer) OVERRIDE;
   virtual bool OnWillRead(int request_id,
-                          net::IOBuffer** buf,
+                          scoped_refptr<net::IOBuffer>* buf,
                           int* buf_size,
                           int min_size) OVERRIDE;
   virtual bool OnReadCompleted(int request_id,
@@ -66,7 +66,6 @@ class RedirectToFileResourceHandler : public LayeredResourceHandler {
   base::WeakPtrFactory<RedirectToFileResourceHandler> weak_factory_;
 
   ResourceDispatcherHostImpl* host_;
-  net::URLRequest* request_;
 
   // We allocate a single, fixed-size IO buffer (buf_) used to read from the
   // network (buf_write_pending_ is true while the system is copying data into