ozone/drm: Only reuse ScanoutBuffers with compatible modifiers

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

Index: ui/ozone/platform/drm/gpu/scanout_buffer.h
diff --git a/ui/ozone/platform/drm/gpu/scanout_buffer.h b/ui/ozone/platform/drm/gpu/scanout_buffer.h
index 8a5cd13cc622297fa1f7d2257a3f4ceb6a5e4d4e..b6b588562dffdf19c948e107ff380c3a7264733e 100644
--- a/ui/ozone/platform/drm/gpu/scanout_buffer.h
+++ b/ui/ozone/platform/drm/gpu/scanout_buffer.h
@@ -34,6 +34,9 @@ class ScanoutBuffer : public base::RefCountedThreadSafe<ScanoutBuffer> {
   // scanout when used as an opaque buffer.
   virtual uint32_t GetOpaqueFramebufferPixelFormat() const = 0;
 
+  // Returns format modifier for buffer.
+  virtual uint64_t GetFormatModifier() const = 0;
+
   // Handle for the buffer. This is received when allocating the buffer.
   virtual uint32_t GetHandle() const = 0;