Fix BufferedSocketWriter to buffer everything before it starts writing.

remoting/protocol/client_video_dispatcher_unittest.cc

 // Copyright 2015 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.
 
 #include "remoting/protocol/client_video_dispatcher.h"
 
 #include "base/bind.h"
 #include "base/memory/scoped_vector.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
@@ skipping 55 matching lines @@
                          base::Unretained(this)),
               &reader_) {
   dispatcher_.Init(&client_channel_factory_, this);
   base::RunLoop().RunUntilIdle();
   DCHECK(initialized_);
   host_socket_.PairWith(
       client_channel_factory_.GetFakeChannel(kVideoChannelName));
   reader_.StartReading(&host_socket_,
                        base::Bind(&ClientVideoDispatcherTest::OnReadError,
                                   base::Unretained(this)));
-  writer_.Init(
+  writer_.Start(
       base::Bind(&P2PStreamSocket::Write, base::Unretained(&host_socket_)),
       BufferedSocketWriter::WriteFailedCallback());
 }
 
 void ClientVideoDispatcherTest::ProcessVideoPacket(
     scoped_ptr<VideoPacket> video_packet,
     const base::Closure& done) {
   video_packets_.push_back(video_packet.release());
   packet_done_callbacks_.push_back(done);
 }
@@ skipping 90 matching lines @@
   base::RunLoop().RunUntilIdle();
 
   // Verify order of Ack messages.
   ASSERT_EQ(2U, ack_messages_.size());
   EXPECT_EQ(kTestFrameId, ack_messages_[0]->frame_id());
   EXPECT_EQ(kTestFrameId + 1, ack_messages_[1]->frame_id());
 }
 
 }  // namespace protocol
 }  // namespace remoting