Remove QuicChromiumClientStream::Delegate in favor of async methods.

net/quic/chromium/quic_chromium_client_session.h

 // Copyright (c) 2012 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.
 //
 // A client specific QuicSession subclass.  This class owns the underlying
 // QuicConnection and QuicConnectionHelper objects.  The connection stores
 // a non-owning pointer to the helper so this session needs to ensure that
 // the helper outlives the connection.
 
 #ifndef NET_QUIC_CHROMIUM_QUIC_CHROMIUM_CLIENT_SESSION_H_
@@ skipping 72 matching lines @@
     // Returns true if the handshake has been confirmed.
     bool IsCryptoHandshakeConfirmed() const;
 
     // Starts a request to create a stream.  If OK is returned, then
     // |stream_| will be updated with the newly created stream.  If
     // ERR_IO_PENDING is returned, then when the request is eventuallly
     // complete |callback| will be called.
     int RequestStream(bool requires_confirmation,
                       const CompletionCallback& callback);
 
-    // Releases |stream_| to the caller and sets |delegate| on the handle.
-    std::unique_ptr<QuicChromiumClientStream::Handle> ReleaseStream(
-        QuicChromiumClientStream::Delegate* delegate);
+    // Releases |stream_| to the caller.
+    std::unique_ptr<QuicChromiumClientStream::Handle> ReleaseStream();
 
     // Sends Rst for the stream, and makes sure that future calls to
     // IsClosedStream(id) return true, which ensures that any subsequent
     // frames related to this stream will be ignored (modulo flow
     // control accounting).
     void ResetPromised(QuicStreamId id, QuicRstStreamErrorCode error_code);
 
     // Returns a new packet bundler while will cause writes to be batched up
     // until a packet is full, or the last bundler is destroyed.
     std::unique_ptr<QuicConnection::ScopedPacketBundler> CreatePacketBundler(
@@ skipping 80 matching lines @@
     // Cancels any pending stream creation request and resets |stream_| if
     // it has not yet been released.
     ~StreamRequest();
 
     // Starts a request to create a stream.  If OK is returned, then
     // |stream_| will be updated with the newly created stream.  If
     // ERR_IO_PENDING is returned, then when the request is eventuallly
     // complete |callback| will be called.
     int StartRequest(const CompletionCallback& callback);
 
-    // Releases |stream_| to the caller and sets |delegate| on it.
-    std::unique_ptr<QuicChromiumClientStream::Handle> ReleaseStream(
-        QuicChromiumClientStream::Delegate* delegate);
+    // Releases |stream_| to the caller.
+    std::unique_ptr<QuicChromiumClientStream::Handle> ReleaseStream();
 
    private:
     friend class QuicChromiumClientSession;
 
     enum State {
       STATE_NONE,
       STATE_WAIT_FOR_CONFIRMATION,
       STATE_WAIT_FOR_CONFIRMATION_COMPLETE,
       STATE_REQUEST_STREAM,
       STATE_REQUEST_STREAM_COMPLETE,
@@ skipping 326 matching lines @@
   // the current sockets_.size() == the passed in value.
   bool migration_pending_;  // True while migration is underway.
   base::WeakPtrFactory<QuicChromiumClientSession> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicChromiumClientSession);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_CHROMIUM_QUIC_CHROMIUM_CLIENT_SESSION_H_