ozone: Allocate scanout buffers according to KMS modifiers.

ui/ozone/platform/drm/gpu/gbm_buffer.h

Index: ui/ozone/platform/drm/gpu/gbm_buffer.h
diff --git a/ui/ozone/platform/drm/gpu/gbm_buffer.h b/ui/ozone/platform/drm/gpu/gbm_buffer.h
index e38a50f75734788539dfb9eff1d5ed197c57ba28..1936cd740a3db124555d59c63ad5edc9e307acdb 100644
--- a/ui/ozone/platform/drm/gpu/gbm_buffer.h
+++ b/ui/ozone/platform/drm/gpu/gbm_buffer.h
@@ -27,7 +27,13 @@ class GbmBuffer : public GbmBufferBase {
       const scoped_refptr<GbmDevice>& gbm,
       uint32_t format,
       const gfx::Size& size,
-      uint32_t usage);
+      uint32_t flags);
+  static scoped_refptr<GbmBuffer> CreateBufferWithModifiers(
+      const scoped_refptr<GbmDevice>& gbm,
+      uint32_t format,
+      const gfx::Size& size,
+      uint32_t flags,
+      const std::vector<uint64_t>& modifiers);
   static scoped_refptr<GbmBuffer> CreateBufferFromFds(
       const scoped_refptr<GbmDevice>& gbm,
       uint32_t format,
@@ -50,11 +56,22 @@ class GbmBuffer : public GbmBufferBase {
             gbm_bo* bo,
             uint32_t format,
             uint32_t flags,
+            uint64_t modifier,
+            uint32_t addfb_flags,
             std::vector<base::ScopedFD>&& fds,
             const gfx::Size& size,
             const std::vector<gfx::NativePixmapPlane>&& planes);
   ~GbmBuffer() override;
 
+  static scoped_refptr<GbmBuffer> CreateBufferForBO(
+      const scoped_refptr<GbmDevice>& gbm,
+      gbm_bo* bo,
+      uint32_t format,
+      const gfx::Size& size,
+      uint32_t flags,
+      uint64_t modifiers,
+      uint32_t addfb_flags);
+
   uint32_t format_;
   uint32_t flags_;
   std::vector<base::ScopedFD> fds_;