diff --git a/webrtc/media/BUILD.gn b/webrtc/media/BUILD.gn
index e3a658c3f8..804bd100fa 100644
--- a/webrtc/media/BUILD.gn
+++ b/webrtc/media/BUILD.gn
@@ -56,6 +56,7 @@ rtc_static_library("rtc_media") {
     "base/device.h",
     "base/hybriddataengine.h",
     "base/mediachannel.h",
+    "base/mediacommon.h",
     "base/mediaconstants.cc",
     "base/mediaconstants.h",
     "base/mediaengine.cc",
diff --git a/webrtc/media/base/mediacommon.h b/webrtc/media/base/mediacommon.h
new file mode 100644
index 0000000000..c760463b8c
--- /dev/null
+++ b/webrtc/media/base/mediacommon.h
@@ -0,0 +1,27 @@
+/*
+ *  Copyright (c) 2004 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef WEBRTC_MEDIA_BASE_MEDIACOMMON_H_
+#define WEBRTC_MEDIA_BASE_MEDIACOMMON_H_
+
+#include "webrtc/base/stringencode.h"
+
+namespace cricket {
+
+enum MediaCapabilities {
+  AUDIO_RECV = 1 << 0,
+  AUDIO_SEND = 1 << 1,
+  VIDEO_RECV = 1 << 2,
+  VIDEO_SEND = 1 << 3,
+};
+
+}  // namespace cricket
+
+#endif  // WEBRTC_MEDIA_BASE_MEDIACOMMON_H_
diff --git a/webrtc/media/base/mediaengine.h b/webrtc/media/base/mediaengine.h
index d1d162370d..866898cbfa 100644
--- a/webrtc/media/base/mediaengine.h
+++ b/webrtc/media/base/mediaengine.h
@@ -24,6 +24,7 @@
 #include "webrtc/base/sigslotrepeater.h"
 #include "webrtc/media/base/codec.h"
 #include "webrtc/media/base/mediachannel.h"
+#include "webrtc/media/base/mediacommon.h"
 #include "webrtc/media/base/videocommon.h"
 #include "webrtc/modules/audio_coding/codecs/audio_decoder_factory.h"
 
diff --git a/webrtc/media/media.gyp b/webrtc/media/media.gyp
index af74801ae1..c18e3113a7 100644
--- a/webrtc/media/media.gyp
+++ b/webrtc/media/media.gyp
@@ -35,6 +35,7 @@
         'base/device.h',
         'base/hybriddataengine.h',
         'base/mediachannel.h',
+        'base/mediacommon.h',
         'base/mediaconstants.cc',
         'base/mediaconstants.h',
         'base/mediaengine.cc',