ozone: ClientPixmapManager passes VGEM fd from browser to renderer.

content/child/child_native_pixmap_manager_ozone.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 "content/child/child_native_pixmap_manager_ozone.h"
+
+#include "base/file_descriptor_posix.h"
+#include "base/lazy_instance.h"
+#include "base/synchronization/lock.h"
+#include "content/common/gpu/native_pixmap_manager_ozone_messages.h"
+
+namespace content {
+
+namespace {
+base::LazyInstance<base::Lock> g_creation_lock = LAZY_INSTANCE_INITIALIZER;
+}
+
+// static
+void ChildNativePixmapManager::CreateSingleton(ThreadSafeSender* sender) {
+  base::AutoLock lock(g_creation_lock.Get());
+  if (ui::NativePixmapManager::GetInstance())
+    return;
+
+  TRACE_EVENT0("renderer", "ChildNativePixmapManager::Create");
+  DCHECK(sender);
+  scoped_ptr<ChildNativePixmapManager> manager(new ChildNativePixmapManager());
+
+  base::FileDescriptor virtual_device;
+  IPC::Message* message =
+      new BrowserNativePixmapManagerMsg_SyncGetVirtualDevice(&virtual_device);
+  bool success = sender->Send(message);
+  if (!success) {
+    LOG(ERROR)
+        << "Fail to send BrowserNativePixmapManagerMsg_SyncGetVirtualDevice";
+    return;
+  }
+
+  manager->Initialize(virtual_device);
+  ui::NativePixmapManager::SetInstance(manager.release());
+}
+
+ChildNativePixmapManager::ChildNativePixmapManager() {}
+
+ChildNativePixmapManager::~ChildNativePixmapManager() {}
+
+void ChildNativePixmapManager::Initialize(
+    const base::FileDescriptor& device_fd) {
+  pixmap_manager_ = ui::NativePixmapManager::Create(device_fd);
+}
+
+std::vector<ui::NativePixmapManager::Configuration>
+ChildNativePixmapManager::GetSupportedNativePixmapConfigurations() const {
+  return pixmap_manager_->GetSupportedNativePixmapConfigurations();
+}
+
+}  // namespace content