trace_processor: JSON importer coerces numbers
Some json traces look like:
{"name": "build.ninja", "tid": "0", "dur": "42", "pid": "0"...}
Instead of:
{"name": "build.ninja", "tid": 0, "dur": 42, "pid": 0...}
Attempt to coerce the relevant fields to numbers.
Change-Id: Ifd9c09b204f6da6a7f007367daa0b32f46aff700Perfetto is an open-source project for performance instrumentation and tracing of Linux/Android/Chrome platforms and user-space apps.
See www.perfetto.dev for docs.