Reland "Delete rtc::TaskQueue::Current in favor of webrtc::TaskQueueBase::Current"

This reverts commit 42d8c93ec351b68554825b58a3dc6525a7dc84da.

Reason for revert: Got Aliby for FEC test flakes

Original change's description:
> Revert "Delete rtc::TaskQueue::Current in favor of webrtc::TaskQueueBase::Current"
> 
> This reverts commit 304e9d2df347630d71fd4423f5971f30dac73e41.
> 
> Reason for revert: Breaks downstream projects.
> Seems to make VideoSendStreamTest.SupportsFlexfecSimulcastVp8 flaky.
> 
> Original change's description:
> > Delete rtc::TaskQueue::Current in favor of webrtc::TaskQueueBase::Current
> > 
> > Bug: webrtc:10191
> > Change-Id: I506cc50a90c73a6a4f6a3de36de0999cca72f5ba
> > Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/126230
> > Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
> > Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
> > Cr-Commit-Position: refs/heads/master@{#27035}
> 
> TBR=danilchap@webrtc.org,kwiberg@webrtc.org
> 
> Change-Id: If98324f88e4b3d18bf2fe33597dfb9711867c243
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: webrtc:10191
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/126484
> Reviewed-by: Yves Gerey <yvesg@webrtc.org>
> Commit-Queue: Yves Gerey <yvesg@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#27041}

TBR=danilchap@webrtc.org,kwiberg@webrtc.org,yvesg@webrtc.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: webrtc:10191
Change-Id: Id87a17ae415142b8e0b11ba03ae7bad84a473fb0
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/126720
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Reviewed-by: Yves Gerey <yvesg@webrtc.org>
Commit-Queue: Yves Gerey <yvesg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27056}
diff --git a/modules/video_coding/BUILD.gn b/modules/video_coding/BUILD.gn
index 60dfdb6..8f6fa0c 100644
--- a/modules/video_coding/BUILD.gn
+++ b/modules/video_coding/BUILD.gn
@@ -572,6 +572,7 @@
       "../..:webrtc_common",
       "../../api:scoped_refptr",
       "../../api:videocodec_test_fixture_api",
+      "../../api/task_queue",
       "../../api/video:builtin_video_bitrate_allocator_factory",
       "../../api/video:encoded_image",
       "../../api/video:video_bitrate_allocation",
@@ -586,6 +587,7 @@
       "../../rtc_base:rtc_task_queue",
       "../../rtc_base:rtc_task_queue_for_test",
       "../../rtc_base:sequenced_task_checker",
+      "../../rtc_base/task_utils:to_queued_task",
       "../../test:test_support",
       "../../test:video_test_common",
       "../../test:video_test_support",