Chrome Version: 65.0.3325.67
Chrome OS Version: 10323.31.0

Steps To Reproduce:
(1) Install 2 or more Android apps that can handle an audio file.
    For example, "VLC for Android" and "Play Music".
(2) Open a .wav file in the Files app by double-clicking it.
(3) See the task chooser dialog is shown. (This will no longer appear if you have ran any of the apps. So this needs to be tested with a clean user profile.)
(4) Choose the Play Music app. Close Play Music.
(5) Select the .wav file and "Open with.."
(6) Choose the VLC app. Close the app.
(7) Double-click the .wav file in the Files app.

Expected Result:
The file opens with VLC app.

Actual Result:
The file opens with Play Music.

How frequently does this problem reproduce?
Not sure. May depend on the environment.

What is the impact to the user, and is there a workaround? If so, what is
it?
User can choose the default app with "change default..." menu to explicitly change the default. After that, that choice will always be applied.


Background:
https://bugs.chromium.org/p/chromium/issues/detail?id=751950#c9

When the explicit "default" app has not chosen yet for the file type/ext., it will pick the last-used app among candidates. If no one was used before, it will show the task chooser dialog box.

It seems lastExecutedTime_ passed to FileTasks.getDefaultTask is not sorted by descending order in case of Android apps.