Fix issue 174250, crash when reloading packaged app.

chrome/browser/ui/gtk/extensions/native_app_window_gtk.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/gtk/extensions/native_app_window_gtk.h"
 
+#include "base/message_loop.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/gtk/extensions/extension_keybinding_registry_gtk.h"
 #include "chrome/browser/ui/gtk/gtk_util.h"
 #include "chrome/browser/ui/gtk/gtk_window_util.h"
 #include "chrome/browser/web_applications/web_app.h"
 #include "chrome/common/extensions/extension.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/render_widget_host_view.h"
 #include "content/public/browser/web_contents.h"
@@ skipping 158 matching lines @@
 void NativeAppWindowGtk::Close() {
   shell_window_->OnNativeWindowChanged();
 
   // Cancel any pending callback from the window configure debounce timer.
   window_configure_debounce_timer_.Stop();
 
   GtkWidget* window = GTK_WIDGET(window_);
   // To help catch bugs in any event handlers that might get fired during the
   // destruction, set window_ to NULL before any handlers will run.
   window_ = NULL;
+  gtk_widget_destroy(window);
 
-  // OnNativeClose does a delete this so no other members should
-  // be accessed after. gtk_widget_destroy is safe (and must
-  // be last).
-  shell_window_->OnNativeClose();
-  gtk_widget_destroy(window);
+  // On other platforms, the native window doesn't get destroyed synchronously.
+  // We simulate that here so that ShellWindow can assume that it doesn't get
+  // deleted immediately upon calling Close().
+  MessageLoop::current()->PostTask(
+      FROM_HERE,
+      base::Bind(&ShellWindow::OnNativeClose,
+                 base::Unretained(shell_window_)));
 }
 
 void NativeAppWindowGtk::Activate() {
   gtk_window_present(window_);
 }
 
 void NativeAppWindowGtk::Deactivate() {
   gdk_window_lower(gtk_widget_get_window(GTK_WIDGET(window_)));
 }
 
@@ skipping 187 matching lines @@
 
   draggable_region_.reset(ShellWindow::RawDraggableRegionsToSkRegion(regions));
 }
 
 // static
 NativeAppWindow* NativeAppWindow::Create(
     ShellWindow* shell_window,
     const ShellWindow::CreateParams& params) {
   return new NativeAppWindowGtk(shell_window, params);
 }