exo: Synchronize multi-display window positioning

components/exo/display.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 "components/exo/display.h"
 
 #include <iterator>
 #include <utility>
 
 #include "ash/public/cpp/shell_window_ids.h"
@@ skipping 161 matching lines @@
       &origin);
 
   return base::MakeUnique<ShellSurface>(
       surface, parent, ShellSurface::BoundsMode::FIXED, origin,
       false /* activatable */, false /* can_minimize */,
       ash::kShellWindowId_DefaultContainer);
 }
 
 std::unique_ptr<ShellSurface> Display::CreateRemoteShellSurface(
     Surface* surface,
+    const gfx::Point& origin,
     int container) {
   TRACE_EVENT2("exo", "Display::CreateRemoteShellSurface", "surface",
                surface->AsTracedValue(), "container", container);
 
   if (surface->HasSurfaceDelegate()) {
     DLOG(ERROR) << "Surface has already been assigned a role";
     return nullptr;
   }
 
   // Remote shell surfaces in system modal container cannot be minimized.
   bool can_minimize = container != ash::kShellWindowId_SystemModalContainer;
 
   return base::MakeUnique<ShellSurface>(
-      surface, nullptr, ShellSurface::BoundsMode::CLIENT, gfx::Point(),
+      surface, nullptr, ShellSurface::BoundsMode::CLIENT, origin,
       true /* activatable */, can_minimize, container);
 }
 
 std::unique_ptr<SubSurface> Display::CreateSubSurface(Surface* surface,
                                                       Surface* parent) {
   TRACE_EVENT2("exo", "Display::CreateSubSurface", "surface",
                surface->AsTracedValue(), "parent", parent->AsTracedValue());
 
   if (surface->window()->Contains(parent->window())) {
     DLOG(ERROR) << "Parent is contained within surface's hierarchy";
@@ skipping 18 matching lines @@
       notification_surface_manager_->GetSurface(notification_id)) {
     DLOG(ERROR) << "Invalid notification id, id=" << notification_id;
     return nullptr;
   }
 
   return base::MakeUnique<NotificationSurface>(notification_surface_manager_,
                                                surface, notification_id);
 }
 
 }  // namespace exo