tools/deep_memory_profiler/templates.json

{
  "l2": ["vm", "map", {
    "mmap-tcmalloc": ["malloc", "component", {}]
  }],
  "details": ["vm", "map", {
    "mmap-tcmalloc": ["malloc", "component", {
      "webkit": ["malloc", "webkit-details", {}],
      "skia": ["malloc", "skia-details", {}]
    }],
    "mmap-v8-heap": ["javascript", "type", {}]
  }]
}