[MD] Implement incognito colors as a NativeTheme (for Aura).

chrome/browser/ui/views/omnibox/omnibox_popup_contents_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/omnibox/omnibox_popup_contents_view.h"
 
 #include <algorithm>
 
 #include "chrome/browser/search/search.h"
 #include "chrome/browser/themes/theme_properties.h"
@@ skipping 232 matching lines @@
 #if defined(OS_WIN)
     // On Windows use the software compositor to ensure that we don't block
     // the UI thread blocking issue during command buffer creation. We can
     // revert this change once http://crbug.com/125248 is fixed.
     params.force_software_compositing = true;
 #endif
     params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
     params.parent = popup_parent->GetNativeView();
     params.bounds = GetPopupBounds();
     params.context = popup_parent->GetNativeWindow();
+    params.native_theme = popup_parent->GetNativeTheme();
     popup_->Init(params);
     // Third-party software such as DigitalPersona identity verification can
     // hook the underlying window creation methods and use SendMessage to
     // synchronously change focus/activation, resulting in the popup being
     // destroyed by the time control returns here.  Bail out in this case to
     // avoid a NULL dereference.
     if (!popup_.get())
       return;
     popup_->SetVisibilityAnimationTransition(views::Widget::ANIMATE_NONE);
     popup_->SetContentsView(this);
@@ skipping 262 matching lines @@
   size_t index = GetIndexForPoint(event.location());
   if (!HasMatchAt(index))
     return;
   omnibox_view_->OpenMatch(model_->result().match_at(index), disposition,
                            GURL(), base::string16(), index);
 }
 
 OmniboxResultView* OmniboxPopupContentsView::result_view_at(size_t i) {
   return static_cast<OmniboxResultView*>(child_at(static_cast<int>(i)));
 }