Add an aura window property for Immersive fullscreen mode

ash/common/wm_window.cc

 // Copyright 2016 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 "ash/common/wm_window.h"
 
 #include "ash/aura/aura_layout_manager_adapter.h"
 #include "ash/aura/wm_shell_aura.h"
 #include "ash/common/ash_constants.h"
 #include "ash/common/shelf/shelf_item_types.h"
@@ skipping 942 matching lines @@
       } else if (old_state == ui::SHOW_STATE_MINIMIZED) {
         Unminimize();
       } else {
         NOTREACHED();
       }
     } else {
       ash::wm::GetWindowState(window_)->OnWindowShowStateChanged();
     }
     return;
   }
+  if (key == aura::client::kImmersiveFullscreenKey) {
+    bool enable = window_->GetProperty(aura::client::kImmersiveFullscreenKey);

[sky, 2017/01/23 21:48:56]

You'll need to mirror this to a WindowManager property and register it with
PropertyConverter, otherwise when clients change the value mash won't be able to
pick it up.

[Peng, 2017/01/25 16:18:57]

Done.

+    GetWindowState()->set_in_immersive_fullscreen(enable);
+    return;
+  }
   WmWindowProperty wm_property;
   if (key == aura::client::kAlwaysOnTopKey) {
     wm_property = WmWindowProperty::ALWAYS_ON_TOP;
   } else if (key == aura::client::kAppIconKey) {
     wm_property = WmWindowProperty::APP_ICON;
   } else if (key == aura::client::kDrawAttentionKey) {
     wm_property = WmWindowProperty::DRAW_ATTENTION;
   } else if (key == aura::client::kModalKey) {
     wm_property = WmWindowProperty::MODAL_TYPE;
   } else if (key == kPanelAttachedKey) {
@@ skipping 54 matching lines @@
     observer.OnTransientChildAdded(this, Get(transient));
 }
 
 void WmWindow::OnTransientChildRemoved(aura::Window* window,
                                        aura::Window* transient) {
   for (auto& observer : transient_observers_)
     observer.OnTransientChildRemoved(this, Get(transient));
 }
 
 }  // namespace ash