Mus: Introduce DisplayCompositorClient mojo interface

services/ui/ws/window_server.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/ws/window_server.h"
 
 #include <set>
 #include <string>
 
 #include "base/logging.h"
@@ skipping 26 matching lines @@
   WindowTree* initiator;
   gfx::Rect revert_bounds;
 };
 
 struct WindowServer::CurrentDragLoopState {
   uint32_t change_id;
   ServerWindow* window;
   WindowTree* initiator;
 };
 
+// TODO(fsamuel): DisplayCompositor should be a mojo interface dispensed by
+// GpuServiceProxy.
 WindowServer::WindowServer(WindowServerDelegate* delegate)
     : delegate_(delegate),
-      display_compositor_(new DisplayCompositor(this)),
       next_client_id_(1),
       display_manager_(new DisplayManager(this, &user_id_tracker_)),
       current_operation_(nullptr),
       in_destructor_(false),
       next_wm_change_id_(0),
       gpu_proxy_(new GpuServiceProxy(this)),
-      window_manager_window_tree_factory_set_(this, &user_id_tracker_) {
+      window_manager_window_tree_factory_set_(this, &user_id_tracker_),
+      display_compositor_client_binding_(this),
+      display_compositor_(new DisplayCompositor(
+          display_compositor_client_binding_.CreateInterfacePtrAndBind())) {
   user_id_tracker_.AddObserver(this);
   OnUserIdAdded(user_id_tracker_.active_id());
 }
 
 WindowServer::~WindowServer() {
   in_destructor_ = true;
 
   for (auto& pair : tree_map_)
     pair.second->PrepareForWindowServerShutdown();
 
@@ skipping 778 matching lines @@
 void WindowServer::OnUserIdAdded(const UserId& id) {
   activity_monitor_map_[id] = base::MakeUnique<UserActivityMonitor>(nullptr);
 }
 
 void WindowServer::OnUserIdRemoved(const UserId& id) {
   activity_monitor_map_.erase(id);
 }
 
 }  // namespace ws
 }  // namespace ui