1 files changed, 41 insertions, 0 deletions
diff --git a/chromium/third_party/blink/public/web/modules/mediastream/web_media_stream_utils.h b/chromium/third_party/blink/public/web/modules/mediastream/web_media_stream_utils.h
new file mode 100644
index 00000000000..edf158c9b56
--- /dev/null
+++ b/chromium/third_party/blink/public/web/modules/mediastream/web_media_stream_utils.h
@@ -0,0 +1,41 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef THIRD_PARTY_BLINK_PUBLIC_WEB_MODULES_MEDIASTREAM_WEB_MEDIA_STREAM_UTILS_H_
+#define THIRD_PARTY_BLINK_PUBLIC_WEB_MODULES_MEDIASTREAM_WEB_MEDIA_STREAM_UTILS_H_
+
+#include <memory>
+
+#include "media/capture/video_capture_types.h"
+#include "third_party/blink/public/common/media/video_capture.h"
+#include "third_party/blink/public/platform/web_common.h"
+
+namespace blink {
+
+class WebMediaStreamSink;
+class WebMediaStreamTrack;
+
+// Requests that a refresh frame be sent "soon" (e.g., to resolve picture loss
+// or quality issues).
+BLINK_EXPORT void RequestRefreshFrameFromVideoTrack(
+    const WebMediaStreamTrack& video_track);
+
+// Calls to these methods must be done on the main render thread.
+// Note that |callback| for frame delivery happens on the IO thread.
+// Warning: Calling RemoveSinkFromMediaStreamTrack does not immediately stop
+// frame delivery through the |callback|, since frames are being delivered on
+// a different thread.
+// |is_sink_secure| indicates if |sink| meets output protection requirement.
+// Generally, this should be false unless you know what you are doing.
+BLINK_EXPORT void AddSinkToMediaStreamTrack(
+    const WebMediaStreamTrack& track,
+    WebMediaStreamSink* sink,
+    const VideoCaptureDeliverFrameCB& callback,
+    bool is_sink_secure);
+BLINK_EXPORT void RemoveSinkFromMediaStreamTrack(
+    const WebMediaStreamTrack& track,
+    WebMediaStreamSink* sink);
+}  // namespace blink
+
+#endif  // THIRD_PARTY_BLINK_PUBLIC_WEB_MODULES_MEDIASTREAM_WEB_MEDIA_STREAM_UTILS_H_