Fix crash when reloading packaged app.

chrome/browser/ui/gtk/extensions/native_app_window_gtk.cc

Index: chrome/browser/ui/gtk/extensions/native_app_window_gtk.cc
diff --git a/chrome/browser/ui/gtk/extensions/native_app_window_gtk.cc b/chrome/browser/ui/gtk/extensions/native_app_window_gtk.cc
index 41548348631785edfc6cae66b59ef5669edf26ad..0d88fcc3b3a7caf3e4127ed57c115b853e62b5e4 100644
--- a/chrome/browser/ui/gtk/extensions/native_app_window_gtk.cc
+++ b/chrome/browser/ui/gtk/extensions/native_app_window_gtk.cc
@@ -7,6 +7,7 @@
 #include <gdk/gdkx.h>
 #include <vector>
 
+#include "base/message_loop/message_loop.h"
 #include "base/message_loop/message_pump_gtk.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/profiles/profile.h"
@@ -243,12 +244,15 @@ void NativeAppWindowGtk::Close() {
   // 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;
-
-  // 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().
+  base::MessageLoop::current()->PostTask(
+      FROM_HERE,
+      base::Bind(&ShellWindow::OnNativeClose,
+                 base::Unretained(shell_window_)));
 }
 
 void NativeAppWindowGtk::Activate() {