tree 9069f76a03023b5fb73edc98420dcbddc994cd52
parent cf244b0831dde4d7ffd03adc7796126da4476200
author wilsonshih <wilsonshih@google.com> 1729238284 +0000
committer wilsonshih <wilsonshih@google.com> 1729238284 +0000

Clear close prepare transition token by TransitionObserver

Transition handler won't receive startAnimation nor mergeAnimation if
there is no changes in that transition. Use TransitionObserver to
track the state in case the close prepare transition is aborted.

Flag: EXEMPT bugfix
Bug: 373828944
Test: disable snapshot, click app button on edge which also trigger
predictive back animation, verify the close prepare transition can
be reset if aborted.

Change-Id: I6c927f5a7602ed3345da05564671445496d30b5a