Fix v8_snapshot build in Chromium with v8_use_perfetto=true

We're migrating Chrome tracing to Perfetto SDK, and the first step is
to make everything build with perfetto library.

Example build errors:
https://ci.chromium.org/ui/p/chromium/builders/ci/linux-headless-shell-rel/52404

Bug: chromium:1006766
Change-Id: I5da38f421b742be41a9cf1993a3cf463ec3cb801
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4152474
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Mikhail Khokhlov <khokhlov@google.com>
Cr-Commit-Position: refs/heads/main@{#85220}

BUILD.gn

@@ -2391,6 +2391,7 @@ v8_source_set("v8_snapshot") {
   deps = [
     ":v8_internal_headers",
     ":v8_libbase",
+    ":v8_tracing",
   ]
   public_deps = [
     # This should be public so downstream targets can declare the snapshot