c++ / mojo changes for 'external window mode'

services/ui/ws/window_tree_host_factory.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 "services/ui/ws/window_tree_host_factory.h"
 
 #include "services/ui/display/viewport_metrics.h"
 #include "services/ui/ws/display.h"
 #include "services/ui/ws/display_binding.h"
 #include "services/ui/ws/window_server.h"
+#include "services/ui/ws/window_tree.h"
 
 namespace ui {
 namespace ws {
 
 WindowTreeHostFactory::WindowTreeHostFactory(WindowServer* window_server,
                                              const UserId& user_id)
     : window_server_(window_server), user_id_(user_id) {}
 
 WindowTreeHostFactory::~WindowTreeHostFactory() {}
 
@@ skipping 16 matching lines @@
   metrics.bounds_in_pixels = gfx::Rect(1024, 768);
   metrics.device_scale_factor = 1.0f;
   metrics.ui_scale_factor = 1.0f;
 
   display::Display display(1, metrics.bounds_in_pixels);
   ws_display->SetDisplay(display);
 
   ws_display->Init(metrics, std::move(display_binding));
 }
 
+void WindowTreeHostFactory::CreatePlatformWindow(
+    mojom::WindowTreeHostRequest tree_host_request,
+    Id transport_window_id) {
+  WindowTree* tree = window_server_->GetTreeForExternalWindowMode();
+  tree->WillCreateRootDisplay(transport_window_id);
+
+  Display* ws_display = new Display(window_server_);
+
+  std::unique_ptr<DisplayBindingImpl> display_binding(
+      new DisplayBindingImpl(std::move(tree_host_request), ws_display, user_id_,
+                             nullptr, window_server_));
+
+  // Provide an initial size for the WindowTreeHost.
+  display::ViewportMetrics metrics;
+  metrics.bounds_in_pixels = gfx::Rect(1024, 768);
+  metrics.device_scale_factor = 1.0f;
+  metrics.ui_scale_factor = 1.0f;
+
+  ws_display->Init(metrics, std::move(display_binding));
+}
+
 }  // namespace ws
 }  // namespace ui