Add a 'hidden' option to chrome.app.window.create()

chrome/browser/ui/gtk/extensions/shell_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/shell_window_gtk.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"
@@ skipping 150 matching lines @@
 
 void ShellWindowGtk::Show() {
   gtk_window_present(window_);
 }
 
 void ShellWindowGtk::ShowInactive() {
   gtk_window_set_focus_on_map(window_, false);
   gtk_widget_show(GTK_WIDGET(window_));
 }
 
+void ShellWindowGtk::Hide() {
+  gtk_widget_hide(GTK_WIDGET(window_));
+}
+
 void ShellWindowGtk::Close() {
   shell_window_->SaveWindowPosition();
 
   // 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;
@@ skipping 176 matching lines @@
     return;
 
   draggable_region_.reset(ShellWindow::RawDraggableRegionsToSkRegion(regions));
 }
 
 // static
 NativeShellWindow* NativeShellWindow::Create(
     ShellWindow* shell_window, const ShellWindow::CreateParams& params) {
   return new ShellWindowGtk(shell_window, params);
 }