Revert 109960 - Send WM_DEVICECHANGE message through SystemMonitor

WM_DEVICECHANGE is sent when there's been a change to devices or the computer;
specifically when a USB device is connected or disconnected. This is intended
for use in support of Gamepads for more performant polling and
connect/disconnect testing. Currently only on Windows, though seems reasonable
to add for other platforms in the future.

BUG=79050


Review URL: http://codereview.chromium.org/8523021

TBR=scottmg@chromium.org
Review URL: http://codereview.chromium.org/8528044

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@109979 0039d316-1c4b-4281-b951-d872f2087c98

4 files changed, 0 insertions, 109 deletions

diff --git a/content/browser/browser_main_loop.cc b/content/browser/browser_main_loop.cc
index 2059d2a..d722637 100644
--- a/content/browser/browser_main_loop.cc
+++ b/content/browser/browser_main_loop.cc
@@ -32,7 +32,6 @@
 #include <ole2.h>
 #include <shellapi.h>
 
-#include "content/browser/system_message_window_win.h"
 #include "ui/base/l10n/l10n_util_win.h"
 #include "net/base/winsock_init.h"
 #endif
@@ -256,10 +255,6 @@ void BrowserMainLoop::MainMessageLoopStart() {
 
   network_change_notifier_.reset(net::NetworkChangeNotifier::Create());
 
-#if defined(OS_WIN)
-  system_message_window_.reset(new SystemMessageWindowWin);
-#endif
-
   for (size_t i = 0; i < parts_list_.size(); ++i)
     parts_list_[i]->PostMainMessageLoopStart();
 }
diff --git a/content/browser/browser_main_loop.h b/content/browser/browser_main_loop.h
index 0abe7e1..8642e4f 100644
--- a/content/browser/browser_main_loop.h
+++ b/content/browser/browser_main_loop.h
@@ -14,7 +14,6 @@
 class CommandLine;
 class HighResolutionTimerManager;
 class MessageLoop;
-class SystemMessageWindowWin;
 
 namespace base {
 class SystemMonitor;
@@ -65,9 +64,6 @@ class BrowserMainLoop {
   scoped_ptr<base::SystemMonitor> system_monitor_;
   scoped_ptr<HighResolutionTimerManager> hi_res_timer_manager_;
   scoped_ptr<net::NetworkChangeNotifier> network_change_notifier_;
-#if defined(OS_WIN)
-  scoped_ptr<SystemMessageWindowWin> system_message_window_;
-#endif
   scoped_ptr<BrowserThreadImpl> main_thread_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserMainLoop);
diff --git a/content/browser/system_message_window_win.cc b/content/browser/system_message_window_win.cc
deleted file mode 100644
index c5a7633..0000000
--- a/content/browser/system_message_window_win.cc
+++ /dev/null
@@ -1,57 +0,0 @@
-// Copyright (c) 2011 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 "content/browser/system_message_window_win.h"
-
-#include <windows.h>
-#include <dbt.h>
-
-#include "base/system_monitor/system_monitor.h"
-#include "base/win/wrapped_window_proc.h"
-
-static const wchar_t* const WindowClassName = L"Chrome_SystemMessageWindow";
-
-SystemMessageWindowWin::SystemMessageWindowWin() {
-  HINSTANCE hinst = GetModuleHandle(NULL);
-
-  WNDCLASSEX wc = {0};
-  wc.cbSize = sizeof(wc);
-  wc.lpfnWndProc =
-      base::win::WrappedWindowProc<&SystemMessageWindowWin::WndProcThunk>;
-  wc.hInstance = hinst;
-  wc.lpszClassName = WindowClassName;
-  ATOM clazz = RegisterClassEx(&wc);
-  DCHECK(clazz);
-
-  window_ = CreateWindow(WindowClassName,
-                         0, 0, 0, 0, 0, 0, 0, 0, hinst, 0);
-  SetWindowLongPtr(window_, GWLP_USERDATA, reinterpret_cast<LONG_PTR>(this));
-}
-
-SystemMessageWindowWin::~SystemMessageWindowWin() {
-  if (window_) {
-    DestroyWindow(window_);
-    UnregisterClass(WindowClassName, GetModuleHandle(NULL));
-  }
-}
-
-LRESULT SystemMessageWindowWin::OnDeviceChange(UINT event_type, DWORD data) {
-  base::SystemMonitor* monitor = base::SystemMonitor::Get();
-  if (monitor && event_type == DBT_DEVNODES_CHANGED)
-    monitor->ProcessDevicesChanged();
-  return TRUE;
-}
-
-LRESULT CALLBACK SystemMessageWindowWin::WndProc(HWND hwnd, UINT message,
-                                                 WPARAM wparam, LPARAM lparam) {
-  switch (message) {
-    case WM_DEVICECHANGE:
-      return OnDeviceChange(static_cast<UINT>(wparam),
-                            static_cast<DWORD>(lparam));
-    default:
-      break;
-  }
-
-  return ::DefWindowProc(hwnd, message, wparam, lparam);
-}
diff --git a/content/browser/system_message_window_win.h b/content/browser/system_message_window_win.h
deleted file mode 100644
index 184aaa3..0000000
--- a/content/browser/system_message_window_win.h
+++ /dev/null
@@ -1,43 +0,0 @@
-// Copyright (c) 2011 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 CONTENT_BROWSER_SYSTEM_MESSAGE_WINDOW_WIN_H_
-#define CONTENT_BROWSER_SYSTEM_MESSAGE_WINDOW_WIN_H_
-#pragma once
-
-#include "build/build_config.h"
-
-#include <windows.h>
-
-#include "base/basictypes.h"
-#include "content/common/content_export.h"
-
-class CONTENT_EXPORT SystemMessageWindowWin {
- public:
-  SystemMessageWindowWin();
-  virtual ~SystemMessageWindowWin();
-
-  virtual LRESULT OnDeviceChange(UINT event_type, DWORD data);
-
- private:
-  LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
-                           WPARAM wparam, LPARAM lparam);
-
-  static LRESULT CALLBACK WndProcThunk(HWND hwnd,
-                                       UINT message,
-                                       WPARAM wparam,
-                                       LPARAM lparam) {
-    SystemMessageWindowWin* msg_wnd = reinterpret_cast<SystemMessageWindowWin*>(
-        GetWindowLongPtr(hwnd, GWLP_USERDATA));
-    if (msg_wnd)
-      return msg_wnd->WndProc(hwnd, message, wparam, lparam);
-    return ::DefWindowProc(hwnd, message, wparam, lparam);
-  }
-
-  HWND window_;
-
-  DISALLOW_COPY_AND_ASSIGN(SystemMessageWindowWin);
-};
-
-#endif  // CONTENT_BROWSER_SYSTEM_MESSAGE_WINDOW_WIN_H_