Remove handler from MessagePumpForIO::IOContext.

ipc/ipc_channel_win.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 "ipc/ipc_channel_win.h"
 
 #include <windows.h>
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 10 matching lines @@
 #include "base/threading/thread_checker.h"
 #include "base/win/scoped_handle.h"
 #include "ipc/attachment_broker.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_logging.h"
 #include "ipc/ipc_message_attachment_set.h"
 #include "ipc/ipc_message_utils.h"
 
 namespace IPC {
 
-ChannelWin::State::State(ChannelWin* channel) : is_pending(false) {
-  memset(&context.overlapped, 0, sizeof(context.overlapped));
-  context.handler = channel;
-}
+ChannelWin::State::State() = default;
 
 ChannelWin::State::~State() {
   static_assert(offsetof(ChannelWin::State, context) == 0,
                 "ChannelWin::State should have context as its first data"
                 "member.");
 }
 
 ChannelWin::ChannelWin(const IPC::ChannelHandle& channel_handle,
                        Mode mode,
                        Listener* listener)
     : ChannelReader(listener),
-      input_state_(this),
-      output_state_(this),
       peer_pid_(base::kNullProcessId),
       waiting_connect_(mode & MODE_SERVER_FLAG),
       processing_incoming_(false),
       validate_client_(false),
       client_secret_(0),
       weak_factory_(this) {
   CreatePipe(channel_handle, mode);
 }
 
 ChannelWin::~ChannelWin() {
@@ skipping 548 matching lines @@
   int secret;
   do {  // Guarantee we get a non-zero value.
     secret = base::RandInt(0, std::numeric_limits<int>::max());
   } while (secret == 0);
 
   id.append(GenerateUniqueRandomChannelID());
   return id.append(base::StringPrintf("\\%d", secret));
 }
 
 }  // namespace IPC