Move event_tracer out of rtc_base_approved

Bug: webrtc:9838
Change-Id: Ic3c424729b5edd3e378c4195afe33ae5c88ad491
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/259312
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Florent Castelli <orphis@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#36637}
diff --git a/sdk/BUILD.gn b/sdk/BUILD.gn
index aac15cb..2ebb904 100644
--- a/sdk/BUILD.gn
+++ b/sdk/BUILD.gn
@@ -1037,6 +1037,7 @@
         "../pc:webrtc_sdp",
         "../rtc_base",
         "../rtc_base:checks",
+        "../rtc_base:event_tracer",
         "../rtc_base:logging",
         "../rtc_base:network_constants",
         "../rtc_base:safe_conversions",
diff --git a/sdk/android/BUILD.gn b/sdk/android/BUILD.gn
index ca1b13b..c9df3f1 100644
--- a/sdk/android/BUILD.gn
+++ b/sdk/android/BUILD.gn
@@ -803,6 +803,7 @@
       "../../pc:webrtc_sdp",
       "../../rtc_base",
       "../../rtc_base:checks",
+      "../../rtc_base:event_tracer",
       "../../rtc_base:logging",
       "../../rtc_base:refcount",
       "../../rtc_base:rtc_base_approved",