ozone: ClientPixmapManager passes VGEM fd from browser to renderer.

ui/ozone/public/native_pixmap_manager.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/ozone/public/native_pixmap_manager.h"
 
 #include "base/trace_event/trace_event.h"
 #include "ui/ozone/platform_object.h"
 #include "ui/ozone/platform_selection.h"
 
 namespace ui {
 
 namespace {
 
 NativePixmapManager* g_instance = nullptr;
 
 }  // namespace
 
 // static
 NativePixmapManager* NativePixmapManager::GetInstance() {
   return g_instance;
 }
 
 // static
-void NativePixmapManager::SetInstance(
-    scoped_ptr<NativePixmapManager> instance) {
+void NativePixmapManager::SetInstance(NativePixmapManager* instance) {
   DCHECK(!g_instance);
   DCHECK(instance);
-  g_instance = instance.release();
+  g_instance = instance;
 }
 
 // static
-scoped_ptr<NativePixmapManager> NativePixmapManager::Create() {
+scoped_ptr<NativePixmapManager> NativePixmapManager::Create(
+    const base::FileDescriptor& device_fd) {
   TRACE_EVENT1("ozone", "NativePixmapManager::Create", "platform",
                GetOzonePlatformName());
   scoped_ptr<NativePixmapManager> manager =
       PlatformObject<NativePixmapManager>::Create();
+  manager->Initialize(device_fd);
   return manager.Pass();
 }
 
 NativePixmapManager::NativePixmapManager() {}
 
 NativePixmapManager::~NativePixmapManager() {}
 
 }  // namespace ui