Revert of Linux Aura: Use Aura theme on all windows when 'Use Classic theme' is used

chrome/browser/ui/views/chrome_browser_main_extra_parts_views_linux.cc

 // Copyright 2016 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/chrome_browser_main_extra_parts_views_linux.h"
 
 #include "base/run_loop.h"
 #include "chrome/browser/chrome_browser_main.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/themes/theme_service.h"
@@ skipping 12 matching lines @@
 #include "ui/native_theme/native_theme_aura.h"
 #include "ui/native_theme/native_theme_dark_aura.h"
 #include "ui/views/linux_ui/linux_ui.h"
 #include "ui/views/widget/desktop_aura/desktop_screen.h"
 #include "ui/views/widget/desktop_aura/x11_desktop_handler.h"
 #include "ui/views/widget/native_widget_aura.h"
 
 namespace {
 
 ui::NativeTheme* GetNativeThemeForWindow(aura::Window* window) {
+  if (!window)
+    return nullptr;
+
   Profile* profile = nullptr;
-  if (window) {
+  // Window types not listed here (such as tooltips) will never use Chrome
+  // theming.
+  if (window->type() == ui::wm::WINDOW_TYPE_NORMAL ||
+      window->type() == ui::wm::WINDOW_TYPE_POPUP) {
     profile = reinterpret_cast<Profile*>(
         window->GetNativeWindowProperty(Profile::kProfileKey));
   }
 
   // If using the system (GTK) theme, don't use an Aura NativeTheme at all.
   // NB: ThemeService::UsingSystemTheme() might lag behind this pref. See
   // http://crbug.com/585522
   if (!profile || profile->GetPrefs()->GetBoolean(prefs::kUsesSystemTheme))
     return nullptr;
 
@@ skipping 35 matching lines @@
   // because its display::Screen instance depends on it.
   views::LinuxUI::instance()->UpdateDeviceScaleFactor();
   ChromeBrowserMainExtraPartsViews::PreCreateThreads();
   views::X11DesktopHandler::get()->AddObserver(this);
 }
 
 void ChromeBrowserMainExtraPartsViewsLinux::OnWorkspaceChanged(
     const std::string& new_workspace) {
   BrowserList::MoveBrowsersInWorkspaceToFront(new_workspace);
 }