Make packaged apps use AppNonClientFrameViewAsh when maximized

chrome/browser/ui/views/frame/non_client_frame_view_switcher_ash.cc

+// Copyright 2013 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/frame/non_client_frame_view_switcher_ash.h"
+
+#include "ash/wm/window_state.h"
+#include "ui/aura/window.h"
+#include "ui/views/widget/widget.h"
+#include "ui/views/window/non_client_view.h"
+
+NonClientFrameViewSwitcherAsh::NonClientFrameViewSwitcherAsh(
+    views::Widget* frame_widget,
+    aura::Window* frame_window)
+    : frame_widget_(frame_widget),
+      frame_window_(frame_window) {
+  frame_window_->AddObserver(this);
+  ash::wm::GetWindowState(frame_window_)->AddObserver(this);
+}
+
+NonClientFrameViewSwitcherAsh::~NonClientFrameViewSwitcherAsh() {
+  if (frame_window_) {
+    frame_window_->RemoveObserver(this);
+    ash::wm::GetWindowState(frame_window_)->RemoveObserver(this);
+  }
+}
+
+void NonClientFrameViewSwitcherAsh::OnWindowDestroying(aura::Window* window) {
+  frame_window_->RemoveObserver(this);
+  ash::wm::GetWindowState(frame_window_)->RemoveObserver(this);
+  frame_window_ = NULL;
+}
+
+void NonClientFrameViewSwitcherAsh::OnWindowShowTypeChanged(
+    ash::wm::WindowState* window_state,
+    ash::wm::WindowShowType type) {
+  if (frame_widget_->non_client_view() &&
+      (window_state->window_show_type() == ash::wm::SHOW_TYPE_MAXIMIZED ||
+       type == ash::wm::SHOW_TYPE_MAXIMIZED)) {
+    // Defer frame layout when replacing the frame. Layout will occur as a
+    // result of WorkspaceLayoutManager::OnWindowShowTypeChanged().
+    frame_widget_->non_client_view()->UpdateFrame(
+        type == ash::wm::SHOW_TYPE_MINIMIZED);
+  }
+}