[Ozone] Enables overlay render format setting path and by default use UYVY

ui/ozone/platform/drm/common/drm_util.cc

 // Copyright 2014 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/common/drm_util.h"
 
 #include <drm_fourcc.h>
 #include <stdint.h>
 #include <stdlib.h>
 #include <sys/mman.h>
@@ skipping 259 matching lines @@
 
   return params;
 }
 
 int GetFourCCFormatFromBufferFormat(gfx::BufferFormat format) {
   switch (format) {
     case gfx::BufferFormat::BGRA_8888:
       return DRM_FORMAT_ARGB8888;
     case gfx::BufferFormat::BGRX_8888:
       return DRM_FORMAT_XRGB8888;
+    case gfx::BufferFormat::UYVY_422:
+      return DRM_FORMAT_UYVY;
     default:
       NOTREACHED();
       return 0;
   }
 }
 
+gfx::BufferFormat GetBufferFormatFromFourCCFormat(int format) {
+  switch (format) {
+    case DRM_FORMAT_ARGB8888:
+      return gfx::BufferFormat::BGRA_8888;
+    case DRM_FORMAT_XRGB8888:
+      return gfx::BufferFormat::BGRX_8888;
+    case DRM_FORMAT_UYVY:
+      return gfx::BufferFormat::UYVY_422;
+    default:
+      NOTREACHED();
+      return gfx::BufferFormat::LAST;

[spang, 2015/11/10 15:46:18]

same here, although this is not supposed to be reachable I think it is odd to
use LAST.

[william.xie1, 2015/11/10 16:07:56]

Done.

+  }
+}
 }  // namespace ui