Add WritePushPromise() method in QuicHeadersStream for server push.

net/quic/quic_headers_stream.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_QUIC_QUIC_HEADERS_STREAM_H_
 #define NET_QUIC_QUIC_HEADERS_STREAM_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "net/base/net_export.h"
@@ skipping 15 matching lines @@
   ~QuicHeadersStream() override;
 
   // Writes |headers| for |stream_id| in a SYN_STREAM or SYN_REPLY
   // frame to the peer.  If |fin| is true, the fin flag will be set on
   // the SPDY frame.  Returns the size, in bytes, of the resulting
   // SPDY frame.
   size_t WriteHeaders(QuicStreamId stream_id,
                       const SpdyHeaderBlock& headers,
                       bool fin,
                       SpdyPriority priority,
-                      QuicAckListenerInterface* ack_notifier_delegate);
+                      QuicAckListenerInterface* ack_listener);
+
+  // Write |headers| for |promised_stream_id| on |original_stream_id| in a
+  // PUSH_PROMISE frame to peer. Return the size, in bytes, of the resulting
+  // SPDY frame.
+  size_t WritePushPromise(QuicStreamId original_stream_id,
+                          QuicStreamId promised_stream_id,
+                          const SpdyHeaderBlock& headers,
+                          QuicAckListenerInterface* ack_listener);
 
   // ReliableQuicStream implementation
   void OnDataAvailable() override;
   SpdyPriority Priority() const override;
 
  private:
   class SpdyFramerVisitor;
 
   // The following methods are called by the SimpleVisitor.
 
@@ skipping 42 matching lines @@
 
   SpdyFramer spdy_framer_;
   scoped_ptr<SpdyFramerVisitor> spdy_framer_visitor_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicHeadersStream);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_HEADERS_STREAM_H_