Remove more non-aura windows code.

chrome/browser/ui/views/sad_tab_view.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/views/sad_tab_view.h"
 
 #include <string>
 
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
@@ skipping 218 matching lines @@
 
 void SadTabView::Show() {
   views::Widget::InitParams sad_tab_params(
       views::Widget::InitParams::TYPE_CONTROL);
 
   // It is not possible to create a native_widget_win that has no parent in
   // and later re-parent it.
   // TODO(avi): This is a cheat. Can this be made cleaner?
   sad_tab_params.parent = web_contents_->GetView()->GetNativeView();
 
-#if defined(OS_WIN) && !defined(USE_AURA)
-  // Crash data indicates we can get here when the parent is no longer valid.
-  // Attempting to create a child window with a bogus parent crashes. So, we
-  // don't show a sad tab in this case in hopes the tab is in the process of
-  // shutting down.
-  if (!IsWindow(sad_tab_params.parent))
-    return;
-#endif
-
   set_owned_by_client();
 
   views::Widget* sad_tab = new views::Widget;
   sad_tab->Init(sad_tab_params);
   sad_tab->SetContentsView(this);
 
   views::Widget::ReparentNativeView(sad_tab->GetNativeView(),
                                     web_contents_->GetView()->GetNativeView());
   gfx::Rect bounds;
   web_contents_->GetView()->GetContainerBounds(&bounds);
@@ skipping 21 matching lines @@
 }
 
 namespace chrome {
 
 SadTab* SadTab::Create(content::WebContents* web_contents,
                        SadTabKind kind) {
   return new SadTabView(web_contents, kind);
 }
 
 }  // namespace chrome