[wfd] Support a low(er) power state by triggering PAUSE/RESUME.

Change-Id: Ibe42bfa73816bbfeb7e652d435254d0171b89727
related-to-bug: 7638150
diff --git a/media/libmediaplayerservice/RemoteDisplay.h b/media/libmediaplayerservice/RemoteDisplay.h
index 0d87250..bd8b684 100644
--- a/media/libmediaplayerservice/RemoteDisplay.h
+++ b/media/libmediaplayerservice/RemoteDisplay.h
@@ -33,6 +33,8 @@
 struct RemoteDisplay : public BnRemoteDisplay {
     RemoteDisplay(const sp<IRemoteDisplayClient> &client, const char *iface);
 
+    virtual status_t pause();
+    virtual status_t resume();
     virtual status_t dispose();
 
 protected: