Support creation of toplevel mus::Windows on separate displays

ash/mus/bridge/wm_root_window_controller_mus.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/bridge/wm_root_window_controller_mus.h"
 
 #include "ash/mus/bridge/wm_shelf_mus.h"
 #include "ash/mus/bridge/wm_shell_mus.h"
 #include "ash/mus/bridge/wm_window_mus.h"
 #include "ash/mus/root_window_controller.h"
@@ skipping 31 matching lines @@
 
 WmRootWindowControllerMus::~WmRootWindowControllerMus() {
   shell_->RemoveRootWindowController(this);
 }
 
 // static
 const WmRootWindowControllerMus* WmRootWindowControllerMus::Get(
     const ui::Window* window) {
   if (!window)
     return nullptr;
+  return window->GetRoot()->GetLocalProperty(kWmRootWindowControllerKey);
+}
 
-  return window->GetRoot()->GetLocalProperty(kWmRootWindowControllerKey);
+gfx::Rect* WmRootWindowControllerMus::ConvertWindowToScreen(
+    const WmWindowMus* source,
+    const ui::Window* window) const {
+  gfx::Point screen_point_top_right =
+      ConvertPointToScreen(source, window->bounds().top_right());
+
+  gfx::Point screen_point_bottom_left =
+      ConvertPointToScreen(source, window->bounds().bottom_left());
+
+  gfx::Rect* screen_bound =
+      new gfx::Rect(screen_point_bottom_left.x(), screen_point_top_right.y(),
+                    screen_point_top_right.x() - screen_point_bottom_left.x(),
+                    screen_point_bottom_left.y() - screen_point_top_right.y());
+
+  return screen_bound;
 }
 
 gfx::Point WmRootWindowControllerMus::ConvertPointToScreen(
     const WmWindowMus* source,
     const gfx::Point& point) const {
   gfx::Point point_in_root =
       source->ConvertPointToTarget(source->GetRootWindow(), point);
   point_in_root += GetDisplay().bounds().OffsetFromOrigin();
   return point_in_root;
 }
@@ skipping 64 matching lines @@
 
 bool WmRootWindowControllerMus::ShouldDestroyWindowInCloseChildWindows(
     WmWindow* window) {
   ui::Window* ui_window = WmWindowMus::GetMusWindow(window);
   return ui_window->WasCreatedByThisClient() ||
          ui_window->window_tree()->GetRoots().count(ui_window);
 }
 
 }  // namespace mus
 }  // namespace ash