Add window property for restore bounds when virtual keyboard is enabled.

ash/aura/wm_window_aura.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/aura/wm_window_aura.h"
 
 #include "ash/aura/aura_layout_manager_adapter.h"
 #include "ash/aura/wm_root_window_controller_aura.h"
 #include "ash/aura/wm_shell_aura.h"
 #include "ash/common/ash_constants.h"
@@ skipping 285 matching lines @@
     return;
   }
   if (key == WmWindowProperty::TOP_VIEW_INSET) {
     window_->SetProperty(aura::client::kTopViewInset, value);
     return;
   }
 
   NOTREACHED();
 }
 
+gfx::Rect* WmWindowAura::GetRectProperty(WmWindowProperty key) {
+  return new gfx::Rect();

[sky, 2016/08/18 22:52:17]

How come you're not getting the property from the window?

+}
+
 ShelfItemDetails* WmWindowAura::GetShelfItemDetails() {
   return window_->GetProperty(kShelfItemDetailsKey);
 }
 
 void WmWindowAura::SetShelfItemDetails(const ShelfItemDetails& details) {
   // |item_details| is owned by |window_|.
   ShelfItemDetails* item_details = new ShelfItemDetails(details);
   window_->SetProperty(kShelfItemDetailsKey, item_details);
 }
 
@@ skipping 508 matching lines @@
                     OnTransientChildAdded(this, Get(transient)));
 }
 
 void WmWindowAura::OnTransientChildRemoved(aura::Window* window,
                                            aura::Window* transient) {
   FOR_EACH_OBSERVER(WmTransientWindowObserver, transient_observers_,
                     OnTransientChildRemoved(this, Get(transient)));
 }
 
 }  // namespace ash