media: replace closures with repeating closures in media throttler.

This closure is run in the control flow of:
* https://source.chromium.org/chromium/chromium/src/+/master:media/base/android/media_service_throttler.cc;drc=d9b91db0b32bcaed524db17b05f614c7e86326bc;l=196

Which is called repeatedly, e.g., from the following locations:
* https://source.chromium.org/chromium/chromium/src/+/master:media/base/android/media_service_throttler.cc;drc=d9b91db0b32bcaed524db17b05f614c7e86326bc;l=95
* https://source.chromium.org/chromium/chromium/src/+/master:media/base/android/media_service_throttler.cc;drc=d9b91db0b32bcaed524db17b05f614c7e86326bc;l=117

This is part of the base::Callback migration.

Context: http://doc/1J4N3V5UmzZL9BZGNrn95E4xJu4cz3ynbg21zXR-J_qA#heading=h.uxpxu8vg4k4r

Bug: 1007799
Change-Id: I05acf0276840888a5771d02f83a88128017e7997
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2111320
Commit-Queue: Jose Lopes <jabolopes@google.com>
Auto-Submit: Jose Lopes <jabolopes@google.com>
Reviewed-by: Xiaohan Wang <xhwang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#755974}

media/base/android/media_service_throttler.cc

@@ -90,7 +90,7 @@ MediaServiceThrottler::MediaServiceThrottler()
       crash_listener_task_runner_(base::ThreadTaskRunnerHandle::Get()) {
   // base::Unretained is safe because the MediaServiceThrottler is supposed to
   // live until the process dies.
-  release_crash_listener_cb_ = base::Bind(
+  release_crash_listener_cb_ = base::BindRepeating(
       &MediaServiceThrottler::ReleaseCrashListener, base::Unretained(this));
   EnsureCrashListenerStarted();
 }

media/base/android/media_service_throttler.h

@@ -100,8 +100,8 @@ class MEDIA_EXPORT MediaServiceThrottler {
   base::TimeTicks last_schedule_call_;
 
   // Callbacks used to release |crash_listener_| after 60s of inactivity.
-  base::Closure release_crash_listener_cb_;
-  base::CancelableClosure cancelable_release_crash_listener_cb_;
+  base::RepeatingClosure release_crash_listener_cb_;
+  base::CancelableRepeatingClosure cancelable_release_crash_listener_cb_;
 
   // Listens for MediaServer crashes using a watchdog MediaPlayer.
   std::unique_ptr<MediaServerCrashListener> crash_listener_;