Revert 150420 - Accelerator support for browserless panels on Windows.

chrome/browser/ui/panels/panel.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 "chrome/browser/ui/panels/panel.h"
 
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/app/chrome_command_ids.h"
@@ skipping 534 matching lines @@
     case IDC_RELOAD:
       panel_host_->Reload();
       break;
     case IDC_RELOAD_IGNORING_CACHE:
       panel_host_->ReloadIgnoringCache();
       break;
     case IDC_STOP:
       panel_host_->StopLoading();
       break;
 
-    // Window management
-    case IDC_CLOSE_WINDOW:
-      content::RecordAction(UserMetricsAction("CloseWindow"));
-      Close();
-      break;
-    case IDC_EXIT:
-      content::RecordAction(UserMetricsAction("Exit"));
-      browser::AttemptUserExit();
-      break;
-
     // Clipboard
     case IDC_COPY:
       content::RecordAction(UserMetricsAction("Copy"));
       native_panel_->PanelCopy();
       break;
     case IDC_CUT:
       content::RecordAction(UserMetricsAction("Cut"));
       native_panel_->PanelCut();
       break;
     case IDC_PASTE:
@@ skipping 186 matching lines @@
 
 void Panel::LoadingStateChanged(bool is_loading) {
   command_updater_.UpdateCommandEnabled(IDC_STOP, is_loading);
   native_panel_->UpdatePanelLoadingAnimations(is_loading);
   UpdateTitleBar();
 }
 
 void Panel::WebContentsFocused(content::WebContents* contents) {
   native_panel_->PanelWebContentsFocused(contents);
 }