Now that https://codereview.webrtc.org/3003643002 is landed we can
remove rtc_base_approved from the public_deps list of rtc_task_queue.

BUG=webrtc:8160
NOTRY=True

Review-Url: https://codereview.webrtc.org/3008553002
Cr-Commit-Position: refs/heads/master@{#19551}
diff --git a/webrtc/video/BUILD.gn b/webrtc/video/BUILD.gn
index 57776b9..b815ace 100644
--- a/webrtc/video/BUILD.gn
+++ b/webrtc/video/BUILD.gn
@@ -103,6 +103,7 @@
       "../modules/video_coding:webrtc_h264",
       "../modules/video_coding:webrtc_vp8",
       "../modules/video_coding:webrtc_vp9",
+      "../rtc_base:rtc_base_approved",
       "../rtc_base:rtc_base_tests_utils",
       "../rtc_base:rtc_task_queue",
       "../system_wrappers",