1835988 - Removing unnecessary raw-pointer of WorkerPrivate

Status: NEW

(Core :: DOM: Workers, enhancement)

Description

[Eden Chuang[:edenchuang]]

According to the discussion of https://phabricator.services.mozilla.com/D177511#5922550, some already-known unnecessary raw-pointer of WorkerPrivate should be removed, such as PerformanceWorker, WebScheduler, and objects which are bound with a GlobalObject(WorkerGlobalScope) and using the WorkerPrivate methods.

We gave a partial solution in https://phabricator.services.mozilla.com/D177511 by getting the WorkerPrivate through GetCurrentThreadWorkerPrivate().

The corresponding of WorkerPrivate methods should be exposed by WorkerGlobalScope(Base) for those objects. And those objects should get the WorkerGlobalScope(Base) by a static downcasting from GetParentObject()/GetOwnerGlobal().