Propagate supported scanout formats from driver to SurfaceFactoryOzone.

ui/ozone/platform/drm/gpu/drm_thread_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_thread_proxy.h"
 
 #include "base/bind.h"
 #include "ui/ozone/platform/drm/gpu/drm_thread_message_proxy.h"
 #include "ui/ozone/platform/drm/gpu/drm_window_proxy.h"
 #include "ui/ozone/platform/drm/gpu/gbm_buffer.h"
@@ skipping 21 matching lines @@
     gfx::BufferFormat format,
     gfx::BufferUsage usage) {
   scoped_refptr<GbmBuffer> buffer;
   PostSyncTask(
       drm_thread_.task_runner(),
       base::Bind(&DrmThread::CreateBuffer, base::Unretained(&drm_thread_),
                  widget, size, format, usage, &buffer));
   return buffer;
 }
 
+void DrmThreadProxy::GetSupportedFormats(
+    std::vector<uint32_t>* support_formats) {
+  PostSyncTask(drm_thread_.task_runner(),
+               base::Bind(&DrmThread::GetSupportedFormats,
+                          base::Unretained(&drm_thread_), support_formats));
+}
+
 }  // namespace ui