[NotForReview] Enable YUV video overlay on Skylake ChromeOS.

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

Index: ui/ozone/platform/drm/gpu/gbm_buffer.cc
diff --git a/ui/ozone/platform/drm/gpu/gbm_buffer.cc b/ui/ozone/platform/drm/gpu/gbm_buffer.cc
index de628ac8007d89274d1472f5118bc4c130671000..eb93aae5a160235806e78b31c971db5a5d703172 100644
--- a/ui/ozone/platform/drm/gpu/gbm_buffer.cc
+++ b/ui/ozone/platform/drm/gpu/gbm_buffer.cc
@@ -280,6 +280,7 @@ scoped_refptr<ScanoutBuffer> GbmPixmap::ProcessBuffer(const gfx::Size& size,
                                                       uint32_t format) {
   DCHECK(GetBufferSize() != size ||
          buffer_->GetFramebufferPixelFormat() != format);
+  PLOG(ERROR) << "GbmPixmap::ProcessBuffer " << format;
 
   if (!processed_pixmap_ || size != processed_pixmap_->GetBufferSize() ||
       format != processed_pixmap_->buffer()->GetFramebufferPixelFormat()) {