tree 80ee29be30ab6b5c576f3127b00f4eb20596bc38
parent 18cf309be7379ac72174323ea61dae5a0bb608a2
author Louis Chang <louischang@google.com> 1609079969 +0800
committer Louis Chang <louischang@google.com> 1609143681 +0800

Rename Stack to Task related terms (4/n)

Update most of methods and members with Stack terms in below files
- ActivityStarter
- ActivityRecord
- Task

No logical changes.

Bug: 157876447
Test: presubmit
Change-Id: I169ca808ba2ce148a9caee6d480c840119434ec7