Encrypted Media: Implement IPC based SetCdm().

content/renderer/media/android/renderer_media_player_manager.cc

Index: content/renderer/media/android/renderer_media_player_manager.cc
diff --git a/content/renderer/media/android/renderer_media_player_manager.cc b/content/renderer/media/android/renderer_media_player_manager.cc
index a37a4e1f885f53908dd85a055c365281f2b4bfaa..e04902f87876306f8b5f948f681812ac066dc2fb 100644
--- a/content/renderer/media/android/renderer_media_player_manager.cc
+++ b/content/renderer/media/android/renderer_media_player_manager.cc
@@ -239,6 +239,10 @@ void RendererMediaPlayerManager::ExitFullscreen(int player_id) {
   Send(new MediaPlayerHostMsg_ExitFullscreen(routing_id(), player_id));
 }
 
+void RendererMediaPlayerManager::SetMediaKeys(int player_id, int cdm_id) {
+  Send(new MediaPlayerHostMsg_SetMediaKeys(routing_id(), player_id, cdm_id));
+}
+
 void RendererMediaPlayerManager::InitializeCdm(int cdm_id,
                                                ProxyMediaKeys* media_keys,
                                                const std::string& key_system,