Remove base/win/metro.{cc|h} and some associated code

ui/gfx/win/hwnd_util.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/gfx/win/hwnd_util.h"
 
 #include "base/i18n/rtl.h"
 #include "base/strings/string_util.h"
-#include "base/win/metro.h"
 #include "base/win/win_util.h"
 #include "ui/gfx/geometry/point.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/size.h"
 
 namespace gfx {
 
 namespace {
 
 // Adjust the window to fit.
@@ skipping 188 matching lines @@
   RECT rect;
   GetWindowRect(window, &rect);
   Point point = Point(base::i18n::IsRTL() ? rect.right : rect.left, rect.top);
   static const int kSystemMenuOffset = 10;
   point.Offset(base::i18n::IsRTL() ? -kSystemMenuOffset : kSystemMenuOffset,
                kSystemMenuOffset);
   ShowSystemMenuAtPoint(window, point);
 }
 
 void ShowSystemMenuAtPoint(HWND window, const Point& point) {
-  // In the Metro process, we never want to show the system menu.
-  if (base::win::IsMetroProcess())
-    return;
   UINT flags = TPM_LEFTBUTTON | TPM_RIGHTBUTTON | TPM_RETURNCMD;
   if (base::i18n::IsRTL())
     flags |= TPM_RIGHTALIGN;
   HMENU menu = GetSystemMenu(window, FALSE);
 
   const int command =
       TrackPopupMenu(menu, flags, point.x(), point.y(), 0, window, NULL);
 
   if (command)
     SendMessage(window, WM_SYSCOMMAND, command, 0);
 }
 
 extern "C" {
   typedef HWND (*RootWindow)();
 }
 
 HWND GetWindowToParentTo(bool get_real_hwnd) {
-  HMODULE metro = base::win::GetMetroModule();
-  if (!metro)
-    return get_real_hwnd ? ::GetDesktopWindow() : HWND_DESKTOP;
-  // In windows 8 metro-mode the root window is not the desktop.
-  RootWindow root_window =
-      reinterpret_cast<RootWindow>(::GetProcAddress(metro, "GetRootWindow"));
-  return root_window();
+  return get_real_hwnd ? ::GetDesktopWindow() : HWND_DESKTOP;
 }
 
 }  // namespace gfx