diagnostics/mojom/external/generator_overrides.json

{
  "c++": {
    "mojo_base.mojom.Time": {
      "generator_typename": "diagnostics::BaseTimeGenerator",
      "generator_headers": [
        "diagnostics/mojom/external/time_mojom_data_generators.h"
      ]
    },
    "mojo_base.mojom.TimeDelta": {
      "generator_typename": "diagnostics::BaseTimeDeltaGenerator",
      "generator_headers": [
        "diagnostics/mojom/external/time_mojom_data_generators.h"
      ]
    }
  }
}