Clean up ResourceHandler API.

content/browser/loader/stream_resource_handler.h

Index: content/browser/loader/stream_resource_handler.h
diff --git a/content/browser/loader/stream_resource_handler.h b/content/browser/loader/stream_resource_handler.h
index 037ebdc91045015bae0273d79844ebb4e24c4035..1dfd3aa1dde4aa66141c8db6bfd158c40a95dffb 100644
--- a/content/browser/loader/stream_resource_handler.h
+++ b/content/browser/loader/stream_resource_handler.h
@@ -51,7 +51,7 @@ class StreamResourceHandler : public StreamWriteObserver,
 
   // Create a new buffer to store received data.
   virtual bool OnWillRead(int request_id,
-                          net::IOBuffer** buf,
+                          scoped_refptr<net::IOBuffer>* buf,
                           int* buf_size,
                           int min_size) OVERRIDE;
 
@@ -72,7 +72,6 @@ class StreamResourceHandler : public StreamWriteObserver,
   virtual void OnSpaceAvailable(Stream* stream) OVERRIDE;
   virtual void OnClose(Stream* stream) OVERRIDE;
 
-  net::URLRequest* request_;
   scoped_refptr<Stream> stream_;
   scoped_refptr<net::IOBuffer> read_buffer_;
   DISALLOW_COPY_AND_ASSIGN(StreamResourceHandler);