Consolidate win/x dispatchers

ui/views/focus/accelerator_handler_win.cc

 // 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 "ui/views/focus/accelerator_handler.h"
 
 #include "ui/base/keycodes/keyboard_code_conversion_win.h"
 #include "ui/base/keycodes/keyboard_codes.h"
 #include "ui/views/events/event.h"
 #include "ui/views/focus/focus_manager.h"
 #include "ui/views/widget/widget.h"
 
 namespace views {
 
 AcceleratorHandler::AcceleratorHandler() {
 }
 
-bool AcceleratorHandler::Dispatch(const MSG& msg) {
+base::DispatchStatus AcceleratorHandler::Dispatch(
+    const base::NativeEvent& msg) {
   bool process_message = true;
 
   if (msg.message >= WM_KEYFIRST && msg.message <= WM_KEYLAST) {
     Widget* widget = Widget::GetTopLevelWidgetForNativeView(msg.hwnd);
     FocusManager* focus_manager = widget ? widget->GetFocusManager() : NULL;
     if (focus_manager) {
       switch (msg.message) {
         case WM_KEYDOWN:
         case WM_SYSKEYDOWN: {
           KeyEvent event(msg);
           process_message = focus_manager->OnKeyEvent(event);
           if (!process_message) {
             // Record that this key is pressed so we can remember not to
             // translate and dispatch the associated WM_KEYUP.
             pressed_keys_.insert(msg.wParam);
           }
           break;
         }
         case WM_KEYUP:
         case WM_SYSKEYUP: {
           std::set<WPARAM>::iterator iter = pressed_keys_.find(msg.wParam);
           if (iter != pressed_keys_.end()) {
             // Don't translate/dispatch the KEYUP since we have eaten the
             // associated KEYDOWN.
             pressed_keys_.erase(iter);
-            return true;
+            return base::EVENT_PROCESSED;
           }
           break;
         }
       }
     }
   }
 
   if (process_message) {
     TranslateMessage(&msg);
     DispatchMessage(&msg);
   }
 
-  return true;
+  return base::EVENT_PROCESSED;
 }
 
 }  // namespace views