[mus+ash] Fixes minimum browser window size (store / retrieve kPreferredSize property)

ash/public/cpp/mus_property_mirror_ash.cc

 // Copyright 2017 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/public/cpp/mus_property_mirror_ash.h"
 
 #include "ash/public/cpp/window_properties.h"
 #include "ui/aura/client/aura_constants.h"
 
 namespace {
@@ skipping 29 matching lines @@
   } else if (key == kWindowPinTypeKey) {
     ash::mojom::WindowPinType value = window->GetProperty(kWindowPinTypeKey);
     root_window->SetProperty(kWindowPinTypeKey, value);
   } else if (key == aura::client::kAppIconKey) {
     MirrorOwnedProperty(window, root_window, aura::client::kAppIconKey);
   } else if (key == kShelfIDKey) {
     MirrorOwnedProperty(window, root_window, kShelfIDKey);
   } else if (key == aura::client::kDrawAttentionKey) {
     bool value = window->GetProperty(aura::client::kDrawAttentionKey);
     root_window->SetProperty(aura::client::kDrawAttentionKey, value);
+  } else if (key == aura::client::kMinimumSize) {
+    MirrorOwnedProperty(window, root_window, aura::client::kMinimumSize);
   } else if (key == aura::client::kTitleKey) {
     MirrorOwnedProperty(window, root_window, aura::client::kTitleKey);
   } else if (key == aura::client::kWindowIconKey) {
     MirrorOwnedProperty(window, root_window, aura::client::kWindowIconKey);
   }
 }
 
 }  // namespace ash