| This empty folder exists to harmonize "built-in" metrics |
| work with the "metric extension" functionality of trace processor. |
| |
| Essentially by adding a protos folder, we can pass |
| src/trace_processor/metrics as an extension path to shell to |
| override all built-in metrics. This means we can change the SQL |
| files *without* needing to recompile trace processor. |
| |
| In the future, we might also move the protos here but that would |
| be a bigger change which would need coordination across repos ( |
| e.g. Chrome because of the metrics autoroller for Chrome metrics). |
