Add the beginning of a simple window manager that we'll support on Windows.

ui/views/mus/aura_init.cc

 // Copyright 2015 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 "ui/views/mus/aura_init.h"
 
 #include <utility>
 
 #include "base/lazy_instance.h"
 #include "base/macros.h"
@@ skipping 37 matching lines @@
 }  // namespace
 
 AuraInit::AuraInit(service_manager::Connector* connector,
                    const service_manager::Identity& identity,
                    const std::string& resource_file,
                    const std::string& resource_file_200,
                    scoped_refptr<base::SingleThreadTaskRunner> io_task_runner,
                    Mode mode)
     : resource_file_(resource_file),
       resource_file_200_(resource_file_200),
-      env_(aura::Env::CreateInstance(mode == Mode::AURA_MUS
-                                         ? aura::Env::Mode::MUS
-                                         : aura::Env::Mode::LOCAL)),
+      env_(aura::Env::CreateInstance(
+          (mode == Mode::AURA_MUS || mode == Mode::AURA_MUS_WINDOW_MANAGER)
+              ? aura::Env::Mode::MUS
+              : aura::Env::Mode::LOCAL)),
       views_delegate_(new MusViewsDelegate) {
   if (mode == Mode::AURA_MUS) {
     mus_client_ =
         base::WrapUnique(new MusClient(connector, identity, io_task_runner));
   }
   ui::MaterialDesignController::Initialize();
   InitializeResources(connector);
 
 // Initialize the skia font code to go ask fontconfig underneath.
 #if defined(OS_LINUX)
@@ skipping 40 matching lines @@
   ui::ResourceBundle::InitSharedInstanceWithPakFileRegion(
       std::move(pak_file), base::MemoryMappedFile::Region::kWholeFile);
   ui::ResourceBundle::GetSharedInstance().AddDataPackFromFile(
       std::move(pak_file_2), ui::SCALE_FACTOR_100P);
   if (!resource_file_200_.empty())
     ui::ResourceBundle::GetSharedInstance().AddDataPackFromFile(
         loader.TakeFile(resource_file_200_), ui::SCALE_FACTOR_200P);
 }
 
 }  // namespace views