Attempt 2 at:...

views/window/window_win.cc

 // Copyright (c) 2006-2008 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 "views/window/window_win.h"
 
 #include <dwmapi.h>
 #include <shellapi.h>
 
 #include "app/gfx/canvas_paint.h"
@@ skipping 1337 matching lines @@
     MONITORINFO mi;
     mi.cbSize = sizeof mi;
     GetMonitorInfo(monitor, &mi);
     CRect work_rect = mi.rcWork;
     work_rect.OffsetRect(-window_rect.left, -window_rect.top);
     new_region = CreateRectRgnIndirect(&work_rect);
   } else {
     gfx::Path window_mask;
     non_client_view_->GetWindowMask(
         gfx::Size(window_rect.Width(), window_rect.Height()), &window_mask);
-    new_region = window_mask.CreateHRGN();
+    new_region = window_mask.CreateNativeRegion();
   }
 
   if (current_rgn_result == ERROR || !EqualRgn(current_rgn, new_region)) {
-    // SetWindowRgn takes ownership of the HRGN created by CreateHRGN.
+    // SetWindowRgn takes ownership of the HRGN created by CreateNativeRegion.
     SetWindowRgn(new_region, TRUE);
   } else {
     DeleteObject(new_region);
   }
 
   DeleteObject(current_rgn);
 }
 
 void WindowWin::ProcessNCMousePress(const CPoint& point, int flags) {
   CPoint temp = point;
@@ skipping 62 matching lines @@
   Window::CloseSecondaryWidget(root_view->GetWidget());
   return TRUE;
 }
 }  // namespace
 
 void Window::CloseAllSecondaryWindows() {
   EnumThreadWindows(GetCurrentThreadId(), WindowCallbackProc, 0);
 }
 
 }  // namespace views