Widget::ShouldUseNativeFrame is now meaningful on Linux.

ui/views/widget/desktop_aura/desktop_native_widget_aura.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/widget/desktop_aura/desktop_native_widget_aura.h"
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
 #include "ui/aura/client/activation_client.h"
 #include "ui/aura/client/aura_constants.h"
@@ skipping 40 matching lines @@
 #include "ui/views/widget/drop_helper.h"
 #include "ui/views/widget/native_widget_aura.h"
 #include "ui/views/widget/root_view.h"
 #include "ui/views/widget/tooltip_manager_aura.h"
 #include "ui/views/widget/widget.h"
 #include "ui/views/widget/widget_aura_utils.h"
 #include "ui/views/widget/widget_delegate.h"
 #include "ui/views/widget/window_reorderer.h"
 
 #if defined(OS_WIN)
+#include "ui/base/win/shell.h"
 #include "ui/gfx/win/dpi.h"
 #endif
 
 DECLARE_EXPORTED_WINDOW_PROPERTY_TYPE(VIEWS_EXPORT,
                                       views::DesktopNativeWidgetAura*);
 
 namespace views {
 
 DEFINE_WINDOW_PROPERTY_KEY(DesktopNativeWidgetAura*,
                            kDesktopNativeWidgetAuraKey, NULL);
@@ skipping 450 matching lines @@
 }
 
 NonClientFrameView* DesktopNativeWidgetAura::CreateNonClientFrameView() {
   return desktop_root_window_host_->CreateNonClientFrameView();
 }
 
 bool DesktopNativeWidgetAura::ShouldUseNativeFrame() const {
   return desktop_root_window_host_->ShouldUseNativeFrame();
 }
 
+bool DesktopNativeWidgetAura::ShouldWindowContentsBeTransparent() const {
+  return desktop_root_window_host_->ShouldWindowContentsBeTransparent();
+}
+
 void DesktopNativeWidgetAura::FrameTypeChanged() {
   desktop_root_window_host_->FrameTypeChanged();
   UpdateWindowTransparency();
 }
 
 Widget* DesktopNativeWidgetAura::GetWidget() {
   return native_widget_delegate_->AsWidget();
 }
 
 const Widget* DesktopNativeWidgetAura::GetWidget() const {
@@ skipping 609 matching lines @@
   DCHECK(!input_method_event_filter_.get());
 
   input_method_event_filter_.reset(new corewm::InputMethodEventFilter(
       root_window_->host()->GetAcceleratedWidget()));
   input_method_event_filter_->SetInputMethodPropertyInRootWindow(
       root_window_->window());
   root_window_event_filter_->AddHandler(input_method_event_filter_.get());
 }
 
 void DesktopNativeWidgetAura::UpdateWindowTransparency() {
-  content_window_->SetTransparent(ShouldUseNativeFrame());
+  content_window_->SetTransparent(
+      desktop_root_window_host_->ShouldWindowContentsBeTransparent());
 }
 
 }  // namespace views