Remove mojo::Array.

services/ui/public/cpp/window_tree_client.cc

 // Copyright 2014 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 "services/ui/public/cpp/window_tree_client.h"
 
 #include <stddef.h>
 
 #include <string>
 #include <utility>
@@ skipping 1038 matching lines @@
     const std::string& name,
     const base::Optional<std::vector<uint8_t>>& new_data) {
   Window* window = GetWindowByServerId(window_id);
   if (!window)
     return;
 
   InFlightPropertyChange new_change(window, name, new_data);
   if (ApplyServerChangeToExistingInFlightChange(new_change))
     return;
 
-  WindowPrivate(window).LocalSetSharedProperty(name, new_data);
+  WindowPrivate(window).LocalSetSharedProperty(
+      name, new_data ? &new_data.value() : nullptr);
 }
 
 void WindowTreeClient::OnWindowInputEvent(uint32_t event_id,
                                           Id window_id,
                                           std::unique_ptr<ui::Event> event,
                                           bool matches_pointer_watcher) {
   DCHECK(event);
   Window* window = GetWindowByServerId(window_id);  // May be null.
 
   if (matches_pointer_watcher && has_pointer_watcher_) {
@@ skipping 401 matching lines @@
     // TODO(riajiang): Figure out if |offset| needs to be converted.
     // (http://crbugs.com/646932)
     window_manager_internal_client_->SetUnderlaySurfaceOffsetAndExtendedHitArea(
         server_id(window), offset.x(), offset.y(),
         gfx::ConvertInsetsToDIP(ScaleFactorForDisplay(window->display_id()),
                                 hit_area));
   }
 }
 
 }  // namespace ui