media: Plumb MediaLog to MojoVideoDecoderService.

media/renderers/default_renderer_factory.cc

Index: media/renderers/default_renderer_factory.cc
diff --git a/media/renderers/default_renderer_factory.cc b/media/renderers/default_renderer_factory.cc
index 2410d1b335480967e0b87fed193be9c76edbc360..814c5fbd574355745754bdaa5890d27e39cb9d7d 100644
--- a/media/renderers/default_renderer_factory.cc
+++ b/media/renderers/default_renderer_factory.cc
@@ -79,7 +79,7 @@ DefaultRendererFactory::CreateVideoDecoders(
 
     if (decoder_factory_) {
       decoder_factory_->CreateVideoDecoders(media_task_runner, gpu_factories,
-                                            &video_decoders);
+                                            media_log_, &video_decoders);
     }
     video_decoders.push_back(base::MakeUnique<GpuVideoDecoder>(
         gpu_factories, request_overlay_info_cb, media_log_));