[Media] Add user gesture reporting for API calls to midi and media streams.

content/common/media/media_stream_messages.h

Index: content/common/media/media_stream_messages.h
diff --git a/content/common/media/media_stream_messages.h b/content/common/media/media_stream_messages.h
index 965d68e8bdb8baa86fdd61b1c857d6fee946f57d..01492c788615bee72b6d8ed4f4798a8a49236441 100644
--- a/content/common/media/media_stream_messages.h
+++ b/content/common/media/media_stream_messages.h
@@ -109,11 +109,12 @@ IPC_MESSAGE_CONTROL0(MediaStreamMsg_DisableAecDump)
 // Messages sent from the renderer to the browser.
 
 // Request a new media stream.
-IPC_MESSAGE_CONTROL4(MediaStreamHostMsg_GenerateStream,
+IPC_MESSAGE_CONTROL5(MediaStreamHostMsg_GenerateStream,
                      int /* render view id */,
                      int /* request id */,
                      content::StreamOptions /* components */,
-                     GURL /* security origin */)
+                     GURL /* security origin */,
+                     bool /* user_gesture */)
 
 // Request to cancel the request for a new media stream.
 IPC_MESSAGE_CONTROL2(MediaStreamHostMsg_CancelGenerateStream,