Merge rtc_task_queue(_api|_impl)? build targets into one

Ignore rtc_link_task_queue_impl flag,
instead use build_with_chromium for custom chromium implementation injection

This changes TaskQueue implementation used in webrtc fuzzers in chromium:
from own webrtc implementation to chromium's.

Bug: webrtc:10191
Change-Id: I63be28b680ae8ea8ee1dbf0c699263c392ce29d3
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/125196
Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#26977}
diff --git a/video/BUILD.gn b/video/BUILD.gn
index de13991..17b05de4 100644
--- a/video/BUILD.gn
+++ b/video/BUILD.gn
@@ -132,7 +132,7 @@
     "../api/video_codecs:video_codecs_api",
     "../modules/video_coding:video_coding",
     "../rtc_base:rtc_base_approved",
-    "../rtc_base:rtc_task_queue_api",
+    "../rtc_base:rtc_task_queue",
     "../system_wrappers:system_wrappers",
     "//third_party/abseil-cpp/absl/memory",
     "//third_party/abseil-cpp/absl/types:optional",