Media Remoting: Draw remoting interstitial on poster image.

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 64b819b6ab7bd3b7229fc723eadaef62cdbed5bd..7d21131f0d274c1f6e2cd7353a548f961381372f 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -260,6 +260,7 @@
 #endif
 
 #if BUILDFLAG(ENABLE_MEDIA_REMOTING)
+#include "content/renderer/image_downloader/single_image_downloader.h"  // nogncheck
 #include "media/remoting/remoting_cdm_controller.h"       // nogncheck
 #include "media/remoting/remoting_cdm_factory.h"          // nogncheck
 #include "media/remoting/remoting_renderer_controller.h"  // nogncheck
@@ -2905,6 +2906,8 @@ blink::WebMediaPlayer* RenderFrameImpl::createMediaPlayer(
 #if BUILDFLAG(ENABLE_MEDIA_REMOTING)
   remoting_controller_ptr->SetSwitchRendererCallback(base::Bind(
       &media::WebMediaPlayerImpl::ScheduleRestart, media_player->AsWeakPtr()));
+  remoting_controller_ptr->SetDownloadPosterCallback(
+      base::Bind(&SingleImageDownloader::DownloadImage, this));
 #endif
   return media_player;
 }