ozone: drm: Fix graphics buffer handle leak in DrmConsoleBuffer

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

Index: ui/ozone/platform/drm/gpu/drm_device.h
diff --git a/ui/ozone/platform/drm/gpu/drm_device.h b/ui/ozone/platform/drm/gpu/drm_device.h
index 546311c5e59589a61b5edaf3fbc168a52782e878..67ffcffa4a3b6c6ef81fe43cb193a195ac41cf4a 100644
--- a/ui/ozone/platform/drm/gpu/drm_device.h
+++ b/ui/ozone/platform/drm/gpu/drm_device.h
@@ -154,6 +154,8 @@ class OZONE_EXPORT DrmDevice : public base::RefCountedThreadSafe<DrmDevice> {
                                  uint32_t stride,
                                  void* pixels);
 
+  virtual bool CloseBufferHandle(uint32_t handle);
+
   virtual bool CommitProperties(drmModePropertySet* properties,
                                 uint32_t flags,
                                 const PageFlipCallback& callback);