Crash if more than 1024 media events are generated in a second.

These should be low frequency, otherwise there's a bug.

R=tmathmeyer

Bug: 1141985
Change-Id: Ibfc915e7f2a4d524da33100dd43fff10b463376e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2496023
Auto-Submit: Dale Curtis <dalecurtis@chromium.org>
Commit-Queue: Ted Meyer <tmathmeyer@chromium.org>
Reviewed-by: Ted Meyer <tmathmeyer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#822364}

content/renderer/media/batching_media_log.cc

@@ -131,6 +131,10 @@ void BatchingMediaLog::AddLogRecordLocked(
         queued_media_events_.push_back(*event);
     }
 
+    // TODO(crbug.com/1141985): This shouldn't exceed 1024 events within a
+    // single second. Crash to help us track down what's going wrong.
+    CHECK_LE(queued_media_events_.size(), 1024u);
+
     if (ipc_send_pending_)
       return;