set perfetto flag to default value of false

Bug: None
Change-Id: I415052619119e2f72deffce17c9950a98c23df3c
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/179961
Commit-Queue: Courtney Edwards <courtneyfe@chromium.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31780}
diff --git a/build_overrides/build.gni b/build_overrides/build.gni
index 8a9dfac..23942ef 100644
--- a/build_overrides/build.gni
+++ b/build_overrides/build.gni
@@ -52,6 +52,7 @@
   # purposes. In any case, it doesn't depend on //third_party/perfetto which
   # is used for base tracing, so this feature is disabled.
   enable_base_tracing = false
+  use_perfetto_client_library = false
 
   # If true, it assumes that //third_party/abseil-cpp is an available
   # dependency for googletest.