ozone/drm: Only reuse ScanoutBuffers with compatible modifiers

ui/ozone/platform/drm/gpu/gbm_buffer_base.cc

Index: ui/ozone/platform/drm/gpu/gbm_buffer_base.cc
diff --git a/ui/ozone/platform/drm/gpu/gbm_buffer_base.cc b/ui/ozone/platform/drm/gpu/gbm_buffer_base.cc
index 7dac027efbb9fba89c2609e93674566103d35329..8af49a8dfdef2ca9364a7508a4938c985fdb3ec0 100644
--- a/ui/ozone/platform/drm/gpu/gbm_buffer_base.cc
+++ b/ui/ozone/platform/drm/gpu/gbm_buffer_base.cc
@@ -24,6 +24,7 @@ GbmBufferBase::GbmBufferBase(const scoped_refptr<GbmDevice>& drm,
     framebuffer_pixel_format_ = format;
     opaque_framebuffer_pixel_format_ = GetFourCCFormatForOpaqueFramebuffer(
         GetBufferFormatFromFourCCFormat(format));
+    format_modifier_ = modifier;
 
     uint32_t handles[4] = {0};
     uint32_t strides[4] = {0};
@@ -86,6 +87,11 @@ uint32_t GbmBufferBase::GetOpaqueFramebufferPixelFormat() const {
   return opaque_framebuffer_pixel_format_;
 }
 
+uint64_t GbmBufferBase::GetFormatModifier() const {
+  DCHECK(framebuffer_);
+  return format_modifier_;
+}
+
 const DrmDevice* GbmBufferBase::GetDrmDevice() const {
   return drm_.get();
 }