Switch webaudio_media_stream_source.cc away from base::Bind

BUG=704136
R=guidou@chromium.org

Change-Id: I195032171c887cb82a3254a1b639a70feb67b71d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1947987
Auto-Submit: Antonio Gomes <tonikitoo@igalia.com>
Reviewed-by: Guido Urdaneta <guidou@chromium.org>
Commit-Queue: Antonio Gomes <tonikitoo@igalia.com>
Cr-Commit-Position: refs/heads/master@{#722442}

third_party/blink/renderer/platform/mediastream/webaudio_media_stream_source.cc

@@ -6,9 +6,9 @@
 
 #include <utility>
 
-#include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/logging.h"
+#include "third_party/blink/renderer/platform/wtf/cross_thread_functional.h"
 
 namespace blink {
 
@@ -17,8 +17,9 @@ WebAudioMediaStreamSource::WebAudioMediaStreamSource(
     scoped_refptr<base::SingleThreadTaskRunner> task_runner)
     : MediaStreamAudioSource(std::move(task_runner), false /* is_remote */),
       is_registered_consumer_(false),
-      fifo_(base::Bind(&WebAudioMediaStreamSource::DeliverRebufferedAudio,
-                       base::Unretained(this))),
+      fifo_(ConvertToBaseRepeatingCallback(CrossThreadBindRepeating(
+          &WebAudioMediaStreamSource::DeliverRebufferedAudio,
+          WTF::CrossThreadUnretained(this)))),
       blink_source_(*blink_source) {
   DVLOG(1) << "WebAudioMediaStreamSource::WebAudioMediaStreamSource()";
 }