Switch DRM platform to using a separate thread

ui/ozone/platform/drm/gpu/drm_window_proxy.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/platform/drm/gpu/drm_window_proxy.h"
+
+#include "ui/ozone/platform/drm/gpu/drm_thread.h"
+#include "ui/ozone/platform/drm/gpu/overlay_plane.h"
+#include "ui/ozone/platform/drm/gpu/proxy_helpers.h"
+#include "ui/ozone/platform/drm/gpu/scanout_buffer.h"
+
+namespace ui {
+
+DrmWindowProxy::DrmWindowProxy(gfx::AcceleratedWidget widget,
+                               DrmThread* drm_thread)
+    : widget_(widget), drm_thread_(drm_thread) {}
+
+DrmWindowProxy::~DrmWindowProxy() {}
+
+void DrmWindowProxy::SchedulePageFlip(const std::vector<OverlayPlane>& planes,
+                                      const SwapCompletionCallback& callback) {
+  drm_thread_->task_runner()->PostTask(
+      FROM_HERE,
+      base::Bind(&DrmThread::SchedulePageFlip, base::Unretained(drm_thread_),
+                 widget_, planes, CreateSafeCallback(callback)));
+}
+
+void DrmWindowProxy::GetVSyncParameters(
+    const gfx::VSyncProvider::UpdateVSyncCallback& callback) {
+  drm_thread_->task_runner()->PostTask(
+      FROM_HERE,
+      base::Bind(&DrmThread::GetVSyncParameters, base::Unretained(drm_thread_),
+                 widget_, CreateSafeCallback(callback)));
+}
+
+}  // namespace ui