[gcmole] Whitelist entry for frames.cc

Enhance gcmole --verbose printing with the GC suspect.

Bug: v8:9986
Change-Id: Ia1454d4edec334eabb31a764583e4ee559f0fe07
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2207174Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67867}

tools/gcmole/gcmole.cc

@@ -387,6 +387,7 @@ static bool SuspectedToCauseGC(clang::MangleContext* ctx,
   }
 
   if (gc_functions.find(decl->getNameAsString()) != gc_functions.end()) {
+    TRACE_LLVM_DECL("Suspected by ", decl);
     return true;
   }
 

tools/gcmole/suspects.whitelist

@@ -3,3 +3,4 @@ IsEval
 IsAsync
 IsPromiseAll
 IsPromiseAny
+VisitRootPointers