trace_events Tests

When the node binary is built with configure flag --with-perfetto, the tests in this folder depends on tools/perfetto/trace_processor_shell, which is downloaded with tools/perfetto/get_trace_processor.py via make tools/perfetto/trace_processor_shell, to convert Perfetto binary trace files to JSON format. On Windows, vcbuild.bat downloads tools/perfetto/trace_processor_shell.exe with the same script before running the tests. Set TRACE_PROCESSOR_SHELL_PATH to use an existing build of the tool instead of downloading a release.

Refer to https://perfetto.dev/docs/reference/trace-processor-cli for help of the trace_processor_shell CLI.