lib/third_party/tracing/model/object_snapshot.js
function ObjectSnapshot(objectInstance, ts, args) {
    tr.model.Event.call(this);
    this.objectInstance = objectInstance;
    this.ts = ts;
    this.args = args;
  }
function ObjectSnapshot(objectInstance, ts, args) {
    tr.model.Event.call(this);
    this.objectInstance = objectInstance;
    this.ts = ts;
    this.args = args;
  }
function ObjectSnapshot ( objectInstance , ts , args ) { tr . model . Event . call ( this ) ; this . objectInstance = objectInstance ; this . ts = ts ; this . args = args ; }
A snapshot of an object instance, at a given moment in time.

Initialization of snapshots and instances is three phased:

1. Instances and snapshots are constructed. This happens during event
importing. Little should be done here, because the object's data
are still being used by the importer to reconstruct object references.

2. Instances and snapshtos are preinitialized. This happens after implicit
objects have been found, but before any references have been found and
switched to direct references. Thus, every snapshot stands on its own.
This is a good time to do global field renaming and type conversion,
e.g. recognizing domain-specific types and converting from C++ naming
convention to JS.

3. Instances and snapshtos are initialized. At this point, {id_ref:
'0x1000'} fields have been converted to snapshot references. This is a
good time to generic initialization steps and argument verification.

@constructor
A snapshot of an object instance at a given moment in time .