Fix BufferedSocketWriter not to return any results from Write().

remoting/protocol/channel_multiplexer_unittest.cc

 // 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.
 
 #include "remoting/protocol/channel_multiplexer.h"
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "net/base/net_errors.h"
@@ skipping 236 matching lines @@
 
   host_session_.fake_channel_factory().GetFakeChannel(kMuxChannelName)->
       set_next_write_error(net::ERR_FAILED);
   host_session_.fake_channel_factory().GetFakeChannel(kMuxChannelName)->
       set_async_write(false);
 
   scoped_refptr<net::IOBufferWithSize> buf = CreateTestBuffer(100);
 
   MockSocketCallback cb1;
   MockSocketCallback cb2;
+  EXPECT_CALL(cb1, OnDone(net::ERR_FAILED));
+  EXPECT_CALL(cb2, OnDone(net::ERR_FAILED));
 
-  EXPECT_CALL(cb1, OnDone(_))
-      .Times(0);
-  EXPECT_CALL(cb2, OnDone(_))
-      .Times(0);
-
-  EXPECT_EQ(net::ERR_FAILED,
+  EXPECT_EQ(net::ERR_IO_PENDING,
             host_socket1_->Write(buf.get(),
                                  buf->size(),
                                  base::Bind(&MockSocketCallback::OnDone,
                                             base::Unretained(&cb1))));
-  EXPECT_EQ(net::ERR_FAILED,
+  EXPECT_EQ(net::ERR_IO_PENDING,
             host_socket2_->Write(buf.get(),
                                  buf->size(),
                                  base::Bind(&MockSocketCallback::OnDone,
                                             base::Unretained(&cb2))));
 
   base::RunLoop().RunUntilIdle();
 }
 
 TEST_F(ChannelMultiplexerTest, WriteFailAsync) {
   ASSERT_NO_FATAL_FAILURE(
@@ skipping 89 matching lines @@
       .WillOnce(InvokeWithoutArgs(
           this, &ChannelMultiplexerTest::DeleteAfterSessionFail));
   EXPECT_CALL(cb2, OnConnectedPtr(_))
       .Times(0);
 
   base::RunLoop().RunUntilIdle();
 }
 
 }  // namespace protocol
 }  // namespace remoting