squash: add test-trace-events-api.js

Currently crashes when run with workers. Real bug?

test/parallel/test-trace-events-api.js

@@ -5,13 +5,11 @@ const common = require('../common');
 
 if (!process.binding('config').hasTracing)
  common.skip('missing trace events');
-if (!common.isMainThread)
- common.skip('process.chdir is not available in Workers');
 
 const assert = require('assert');
 const cp = require('child_process');
-const path = require('path');
 const fs = require('fs');
+const path = require('path');
 const tmpdir = require('../common/tmpdir');
 const {
  createTracing,
@@ -109,7 +107,6 @@ if (isChild) {
  }
 
  tmpdir.refresh();
- process.chdir(tmpdir.path);
 
  const expectedMarks = ['A', 'B'];
  const expectedBegins = [
@@ -123,7 +120,8 @@ if (isChild) {
 
  const proc = cp.fork(__filename,
  ['child'],
- { execArgv: [ '--expose-gc',
+ { cwd: tmpdir.path,
+ execArgv: [ '--expose-gc',
  '--trace-event-categories',
  'foo' ] });