Adds a basic NativeWindowViews.

views/window/window.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 "views/window/window.h"
 
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/base/l10n/l10n_font_util.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/font.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/size.h"
 #include "views/widget/widget.h"
 #include "views/widget/native_widget.h"
+#include "views/window/custom_frame_view.h"
 #include "views/window/native_window.h"
 #include "views/window/window_delegate.h"
 
 namespace views {
 
 ////////////////////////////////////////////////////////////////////////////////
 // Window, public:
 
 Window::InitParams::InitParams(WindowDelegate* window_delegate)
     : window_delegate(window_delegate),
@@ skipping 195 matching lines @@
   non_client_view_->UpdateWindowIcon();
   native_window_->SetWindowIcons(window_delegate_->GetWindowIcon(),
                                  window_delegate_->GetWindowAppIcon());
 }
 
 void Window::SetIsAlwaysOnTop(bool always_on_top) {
   native_window_->SetAlwaysOnTop(always_on_top);
 }
 
 NonClientFrameView* Window::CreateFrameViewForWindow() {
-  return native_window_->CreateFrameViewForWindow();
+  NonClientFrameView* frame_view = native_window_->CreateFrameViewForWindow();
+  return frame_view ? frame_view : new CustomFrameView(this);
 }
 
 void Window::UpdateFrameAfterFrameChange() {
   native_window_->UpdateFrameAfterFrameChange();
 }
 
 gfx::NativeWindow Window::GetNativeWindow() const {
   return native_window_->GetNativeWindow();
 }
 
@@ skipping 165 matching lines @@
   if (!window_delegate_)
     return;
 
   bool maximized;
   gfx::Rect bounds;
   native_window_->GetWindowBoundsAndMaximizedState(&bounds, &maximized);
   window_delegate_->SaveWindowPlacement(bounds, maximized);
 }
 
 }  // namespace views