misc: set worker names

react/features/local-recording/recording/flac/FlacAdapter.js

         // only when flac recording is in use.
         try {
             // try load the minified version first
-            this._encoder = new Worker('/libs/flacEncodeWorker.min.js');
+            this._encoder = new Worker('/libs/flacEncodeWorker.min.js', { name: 'FLAC encoder worker' });
         } catch (exception1) {
             // if failed, try unminified version
             try {
-                this._encoder = new Worker('/libs/flacEncodeWorker.js');
+                this._encoder = new Worker('/libs/flacEncodeWorker.js', { name: 'FLAC encoder worker' });
             } catch (exception2) {
                 throw new Error('Failed to load flacEncodeWorker.');
             }

react/features/stream-effects/blur/JitsiStreamBlurEffect.js

         this._outputCanvasElement.getContext('2d');
         this._inputVideoElement = document.createElement('video');
 
-        this._maskFrameTimerWorker = new Worker(timerWorkerScript);
+        this._maskFrameTimerWorker = new Worker(timerWorkerScript, { name: 'Blur effect worker' });
         this._maskFrameTimerWorker.onmessage = this._onMaskFrameTimer;
     }
 

react/features/stream-effects/presenter/JitsiStreamPresenterEffect.js

 
         // Bind event handler so it is only bound once for every instance.
         this._onVideoFrameTimer = this._onVideoFrameTimer.bind(this);
-        this._videoFrameTimerWorker = new Worker(timerWorkerScript);
+        this._videoFrameTimerWorker = new Worker(timerWorkerScript, { name: 'Presenter effect worker' });
         this._videoFrameTimerWorker.onmessage = this._onVideoFrameTimer;
     }
 

react/features/stream-effects/screenshot-capture/ScreenshotCaptureEffect.js

         // Bind handlers such that they access the same instance.
         this._handleWorkerAction = this._handleWorkerAction.bind(this);
         this._initScreenshotCapture = this._initScreenshotCapture.bind(this);
-        this._streamWorker = new Worker(timerWorkerScript);
+        this._streamWorker = new Worker(timerWorkerScript, { name: 'Screenshot capture worker' });
         this._streamWorker.onmessage = this._handleWorkerAction;
     }