ozone/drm: Only reuse ScanoutBuffers with compatible modifiers

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

Index: ui/ozone/platform/drm/gpu/gbm_buffer_base.h
diff --git a/ui/ozone/platform/drm/gpu/gbm_buffer_base.h b/ui/ozone/platform/drm/gpu/gbm_buffer_base.h
index 1aca1bb7fac4bd35bea0ef2e5af7e0580d196388..48a1525320568a005b088cf3ca695ec048a72004 100644
--- a/ui/ozone/platform/drm/gpu/gbm_buffer_base.h
+++ b/ui/ozone/platform/drm/gpu/gbm_buffer_base.h
@@ -32,6 +32,7 @@ class GbmBufferBase : public ScanoutBuffer {
   gfx::Size GetSize() const override;
   uint32_t GetFramebufferPixelFormat() const override;
   uint32_t GetOpaqueFramebufferPixelFormat() const override;
+  uint64_t GetFormatModifier() const override;
   const DrmDevice* GetDrmDevice() const override;
   bool RequiresGlFinish() const override;
 
@@ -54,6 +55,7 @@ class GbmBufferBase : public ScanoutBuffer {
   // otherwise it is set to 0.
   uint32_t opaque_framebuffer_ = 0;
   uint32_t opaque_framebuffer_pixel_format_ = 0;
+  uint64_t format_modifier_ = 0;
 
   DISALLOW_COPY_AND_ASSIGN(GbmBufferBase);
 };