Provide callback to create mojo AndroidOverlays to AVDA.

media/gpu/android_video_decode_accelerator.h

Index: media/gpu/android_video_decode_accelerator.h
diff --git a/media/gpu/android_video_decode_accelerator.h b/media/gpu/android_video_decode_accelerator.h
index ce1347ba7601b9573ae464ba81151c9a73c4b2d7..3788eaeac5f615c11b68a401cb43eb45e7071dc7 100644
--- a/media/gpu/android_video_decode_accelerator.h
+++ b/media/gpu/android_video_decode_accelerator.h
@@ -20,6 +20,7 @@
 #include "gpu/command_buffer/service/gpu_preferences.h"
 #include "media/base/android/media_codec_bridge_impl.h"
 #include "media/base/android/media_drm_bridge_cdm_context.h"
+#include "media/base/android_overlay_mojo_factory.h"
 #include "media/base/content_decryption_module.h"
 #include "media/gpu/android_video_surface_chooser.h"
 #include "media/gpu/avda_codec_allocator.h"
@@ -66,6 +67,7 @@ class MEDIA_GPU_EXPORT AndroidVideoDecodeAccelerator
       std::unique_ptr<AndroidVideoSurfaceChooser> surface_chooser,
       const MakeGLContextCurrentCallback& make_context_current_cb,
       const GetGLES2DecoderCallback& get_gles2_decoder_cb,
+      const AndroidOverlayMojoFactoryCB& overlay_factory_cb,
       const PlatformConfig& platform_config);
 
   ~AndroidVideoDecodeAccelerator() override;
@@ -397,6 +399,9 @@ class MEDIA_GPU_EXPORT AndroidVideoDecodeAccelerator
 
   PlatformConfig platform_config_;
 
+  // Optional factory to produce mojo AndroidOverlay instances.
+  AndroidOverlayMojoFactoryCB overlay_factory_cb_;
+
   // WeakPtrFactory for posting tasks back to |this|.
   base::WeakPtrFactory<AndroidVideoDecodeAccelerator> weak_this_factory_;