Adding a new window type for frameless non-transient top level windows, used by ChromeOS' window ...

chrome/browser/chromeos/login/views_oobe_display.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 <vector>
 
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chromeos/login/views_eula_screen_actor.h"
 #include "chrome/browser/chromeos/login/views_oobe_display.h"
 #include "chrome/browser/chromeos/login/views_network_screen_actor.h"
@@ skipping 198 matching lines @@
 }
 
 ViewScreenDelegate* ViewsOobeDisplay::GetHTMLPageScreenActor() {
   return this;
 }
 
 views::Widget* ViewsOobeDisplay::CreateScreenWindow(
     const gfx::Rect& bounds, bool initial_show) {
   widget_ = new views::Widget;
   views::Widget::InitParams widget_params(
-      views::Widget::InitParams::TYPE_POPUP);
+      views::Widget::InitParams::TYPE_WINDOW_FRAMELESS);
   // Window transparency makes background flicker through controls that
   // are constantly updating its contents (like image view with video
   // stream). Hence enabling double buffer.
   widget_params.double_buffer = true;
   widget_params.transparent = true;
   widget_params.bounds = bounds;
   widget_->Init(widget_params);
   std::vector<int> params;
   // For initial show WM would animate background window.
   // Otherwise it stays unchanged.
@@ skipping 25 matching lines @@
 
 void ViewsOobeDisplay::SetScreenSize(const gfx::Size &screen_size) {
   screen_size_ = screen_size;
 }
 
 void ViewsOobeDisplay::SetScreenObserver(ScreenObserver* screen_observer) {
   screen_observer_ = screen_observer;
 }
 
 }  // namespace chromeos