debug_helper: Add missing tracing dependency

Bug: chromium:1006541
Change-Id: Ia3f1b16a4becd10bd4041f35e125aad7acc33949
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2653235
Auto-Submit: Sami Kyöstilä <skyostil@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72386}

tools/debug_helper/BUILD.gn

@@ -97,6 +97,7 @@ v8_component("v8_debug_helper") {
     "../..:run_torque",
     "../..:v8_headers",
     "../..:v8_libbase",
+    "../..:v8_tracing",
   ]
 
   configs = [ ":internal_config" ]