Bug 1678373 - Remove mAudibleState. r=alwu

Differential Revision: https://phabricator.services.mozilla.com/D127559

dom/media/utils/TelemetryProbesReporter.cpp

@@ -159,20 +159,18 @@ void TelemetryProbesReporter::OnVisibilityChanged(Visibility aVisibility) {
 
 void TelemetryProbesReporter::OnAudibleChanged(AudibleState aAudibleState) {
   AssertOnMainThreadAndNotShutdown();
-  LOG("Audibility changed: %s -> %s", ToAudibilityStr(mAudibleState),
-      ToAudibilityStr(aAudibleState));
+  LOG("Audibility changed, now %s", ToAudibilityStr(aAudibleState));
   if (aAudibleState == AudibleState::eNotAudible) {
-    MOZ_ASSERT(mAudibleState == AudibleState::eAudible);
+    if (!mInaudibleAudioPlayTime.IsStarted()) {
       StartInaudibleAudioTimeAccumulator();
+    }
   } else {
-    MOZ_ASSERT(mAudibleState == AudibleState::eNotAudible);
     // This happens when starting playback, no need to pause, because it hasn't
     // been started yet.
     if (mInaudibleAudioPlayTime.IsStarted()) {
       PauseInaudibleAudioTimeAccumulator();
     }
   }
-  mAudibleState = aAudibleState;
 }
 
 void TelemetryProbesReporter::OnMutedChanged(bool aMuted) {

dom/media/utils/TelemetryProbesReporter.h

@@ -154,8 +154,6 @@ class TelemetryProbesReporter final {
 
   Visibility mMediaElementVisibility = Visibility::eInitial;
 
-  AudibleState mAudibleState = AudibleState::eNotAudible;
-
   MediaContent mMediaContent = MediaContent::MEDIA_HAS_NOTHING;
 
   bool mIsPlaying = false;