Remove some uses of ATL in UI code

tools/memory_watcher/hotkey.h

 // Copyright (c) 2009 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 TOOLS_MEMORY_WATCHER_HOTKEY_H_
 #define TOOLS_MEMORY_WATCHER_HOTKEY_H_
 
 #include "ui/gfx/rect.h"
+#include "ui/gfx/win/msg_util.h"
 #include "ui/gfx/win/window_impl.h"
 
 // HotKey handler.
 // Programs wishing to register a hotkey can use this.
 class HotKeyHandler : public gfx::WindowImpl {
  public:
   HotKeyHandler(UINT modifiers, UINT vk)
     : modifiers_(modifiers),
       vkey_(vk) {
     Start();
   }
   ~HotKeyHandler() { Stop(); }
 
-  BEGIN_MSG_MAP_EX(HotKeyHandler)
-    MESSAGE_HANDLER(WM_HOTKEY, OnHotKey)
-  END_MSG_MAP()
+  CR_BEGIN_MSG_MAP_EX(HotKeyHandler)
+    CR_MSG_WM_HOTKEY(OnHotKey)
+  CR_END_MSG_MAP()
 
  private:
   static const int hotkey_id = 0x0000baba;
 
   bool Start() {
     set_window_style(WS_POPUP);
     Init(NULL, gfx::Rect());
     return RegisterHotKey(hwnd(), hotkey_id, modifiers_, vkey_) == TRUE;
   }
 
   void Stop() {
     UnregisterHotKey(hwnd(), hotkey_id);
     DestroyWindow(hwnd());
   }
 
   // Handle the registered Hotkey being pressed.
-  virtual LRESULT OnHotKey(UINT /*uMsg*/, WPARAM /*wParam*/,
-                           LPARAM /*lParam*/, BOOL& bHandled) = 0;
+  virtual void OnHotKey(UINT /*uMsg*/,
+                        WPARAM /*wParam*/,
+                        LPARAM /*lParam*/) = 0;
 
   UINT modifiers_;
   UINT vkey_;
 };
 
 #endif  // TOOLS_MEMORY_WATCHER_HOTKEY_H_