Index: content/browser/renderer_host/media/audio_renderer_host.h |
diff --git a/content/browser/renderer_host/media/audio_renderer_host.h b/content/browser/renderer_host/media/audio_renderer_host.h |
index ed89e93dd2165314d45bfcfd35f73066df356157..006cca34dabf7d14395ef3d06bba0994c84f9a33 100644 |
--- a/content/browser/renderer_host/media/audio_renderer_host.h |
+++ b/content/browser/renderer_host/media/audio_renderer_host.h |
@@ -216,7 +216,8 @@ class CONTENT_EXPORT AudioRendererHost : public BrowserMessageFilter { |
// A map of stream IDs to audio sources. |
AudioEntryMap audio_entries_; |
- // The number of streams in the playing state. |
+ // The number of streams in the playing state. Atomic read safe from any |
+ // thread, but should only be updated from the IO thread. |
base::AtomicRefCount num_playing_streams_; |
// Salt required to translate renderer device IDs to raw device IDs |