[getUserMedia] Remove out-dated comment.

BUG=796964

Change-Id: Ife3b4b9d4ded591b162884df4c83bd8a0a51d449
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1859985
Commit-Queue: Armando Miraglia <armax@chromium.org>
Reviewed-by: Guido Urdaneta <guidou@chromium.org>
Auto-Submit: Armando Miraglia <armax@chromium.org>
Cr-Commit-Position: refs/heads/master@{#706387}

third_party/blink/renderer/modules/mediastream/user_media_processor.h

@@ -289,8 +289,7 @@ class MODULES_EXPORT UserMediaProcessor
   mojo::Remote<blink::mojom::blink::MediaStreamDispatcherHost> dispatcher_host_;
 
   // UserMedia requests are processed sequentially. |current_request_info_|
-  // contains the request currently being processed, if any, and
-  // |pending_request_infos_| is a list of queued requests.
+  // contains the request currently being processed.
   Member<RequestInfo> current_request_info_;
   MediaDevicesDispatcherCallback media_devices_dispatcher_cb_;
   base::OnceClosure request_completed_cb_;