Add CanMinimize to classes that implement WidgetDelegate::CanMaximize.

ui/views/win/hwnd_message_handler.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 "ui/views/win/hwnd_message_handler.h"
 
 #include <dwmapi.h>
 #include <oleacc.h>
 #include <shellapi.h>
 #include <wtsapi32.h>
@@ skipping 1458 matching lines @@
   bool is_maximized = IsMaximized();
   bool is_restored = !is_fullscreen && !is_minimized && !is_maximized;
 
   ScopedRedrawLock lock(this);
   EnableMenuItemByCommand(menu, SC_RESTORE, delegate_->CanResize() &&
                           (is_minimized || is_maximized));
   EnableMenuItemByCommand(menu, SC_MOVE, is_restored);
   EnableMenuItemByCommand(menu, SC_SIZE, delegate_->CanResize() && is_restored);
   EnableMenuItemByCommand(menu, SC_MAXIMIZE, delegate_->CanMaximize() &&
                           !is_fullscreen && !is_maximized);
-  // TODO: unfortunately, WidgetDelegate does not declare CanMinimize() and some
-  // code depends on this check, see http://crbug.com/341010.
-  EnableMenuItemByCommand(menu, SC_MINIMIZE, delegate_->CanMaximize() &&
+  EnableMenuItemByCommand(menu, SC_MINIMIZE, delegate_->CanMinimize() &&
                           !is_minimized);
 
   if (is_maximized && delegate_->CanResize())
     ::SetMenuDefaultItem(menu, SC_RESTORE, FALSE);
   else if (!is_maximized && delegate_->CanMaximize())
     ::SetMenuDefaultItem(menu, SC_MAXIMIZE, FALSE);
 }
 
 void HWNDMessageHandler::OnInputLangChange(DWORD character_set,
                                            HKL input_language_id) {
@@ skipping 974 matching lines @@
     SetWindowPos(hwnd(), NULL, 0, 0, 0, 0, flags | SWP_HIDEWINDOW);
     SetWindowPos(hwnd(), NULL, 0, 0, 0, 0, flags | SWP_SHOWWINDOW);
   }
   // WM_DWMCOMPOSITIONCHANGED is only sent to top level windows, however we want
   // to notify our children too, since we can have MDI child windows who need to
   // update their appearance.
   EnumChildWindows(hwnd(), &SendDwmCompositionChanged, NULL);
 }
 
 }  // namespace views