Add Promises for EME (Chromium side)

media/base/android/media_player_android.cc

Index: media/base/android/media_player_android.cc
diff --git a/media/base/android/media_player_android.cc b/media/base/android/media_player_android.cc
index 158e520c54f5f11941e81df9bb261ab7c41418f6..e451c3ca5bc1a55f77d90716b42c2e2b1ad7795b 100644
--- a/media/base/android/media_player_android.cc
+++ b/media/base/android/media_player_android.cc
@@ -5,8 +5,8 @@
 #include "media/base/android/media_player_android.h"
 
 #include "base/logging.h"
+#include "media/base/android/media_drm_bridge.h"
 #include "media/base/android/media_player_manager.h"
-#include "media/base/media_keys.h"
 
 namespace media {
 
@@ -31,7 +31,7 @@ GURL MediaPlayerAndroid::GetFirstPartyForCookies() {
   return GURL();
 }
 
-void MediaPlayerAndroid::SetCdm(MediaKeys* cdm) {
+void MediaPlayerAndroid::SetCdm(MediaDrmBridge* cdm) {
   // Not all players support CDMs. Do nothing by default.
   return;
 }