mus: Remove unnecessary const from property TypeConverter templates

ash/mus/sysui_application.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/mus/sysui_application.h"
 
 #include "ash/desktop_background/desktop_background_controller.h"
 #include "ash/host/ash_window_tree_host_init_params.h"
 #include "ash/host/ash_window_tree_host_platform.h"
 #include "ash/mus/keyboard_ui_mus.h"
@@ skipping 113 matching lines @@
 
  private:
   views::NativeWidget* InitNativeWidget(
       const views::Widget::InitParams& params,
       views::internal::NativeWidgetDelegate* delegate) {
     std::map<std::string, std::vector<uint8_t>> properties;
     if (params.parent) {
       mash::wm::mojom::Container container = GetContainerId(params);
       if (container != mash::wm::mojom::Container::COUNT) {
         properties[mash::wm::mojom::kWindowContainer_Property] =
-            mojo::TypeConverter<const std::vector<uint8_t>, int32_t>::Convert(
+            mojo::ConvertTo<std::vector<uint8_t>>(
                 static_cast<int32_t>(container));
       }
       mash::wm::mojom::AshWindowType type = GetAshWindowType(params.parent);
       if (type != mash::wm::mojom::AshWindowType::COUNT) {
         properties[mash::wm::mojom::kAshWindowType_Property] =
-            mojo::TypeConverter<const std::vector<uint8_t>, int32_t>::Convert(
-                static_cast<int32_t>(type));
+            mojo::ConvertTo<std::vector<uint8_t>>(static_cast<int32_t>(type));
       }
     }
 
     // AshInit installs a stub implementation of ui::ContextFactory, so that the
     // AshWindowTreeHost instances created do not actually show anything to the
     // user. However, when creating a views::Widget instance, the
     // WindowManagerConnection creates a WindowTreeHostMus instance, which
     // creates a ui::Compositor, and it needs a real ui::ContextFactory
     // implementation. So, unset the context-factory here temporarily when
     // creating NativeWidgetMus. But restore the stub instance afterwards, so
@@ skipping 141 matching lines @@
   ash_init_.reset(new AshInit());
   ash_init_->Initialize(connector);
 }
 
 bool SysUIApplication::AcceptConnection(mojo::Connection* connection) {
   return true;
 }
 
 }  // namespace sysui
 }  // namespace ash