commit 688cf20656336fc8d3153e90a2722ca0b4831c23
author Findit <findit-for-me@appspot.gserviceaccount.com> Sat Jul 07 03:54:32 2018
committer Findit <findit-for-me@appspot.gserviceaccount.com> Sat Jul 07 03:54:32 2018
tree 07673508f6db36989f8468c07dff23cda12d683d
parent 53ed5722bc73a243e24880f5b5554da1d3017af6

Revert "Keep timestamp in aar.py and copy_ex.py when file is not changed"

This reverts commit 53ed5722bc73a243e24880f5b5554da1d3017af6.

Reason for revert:

Findit (https://goo.gl/kROfz5) identified CL at revision 573145 as the
culprit for failures in the build cycles as shown on:
https://findit-for-me.appspot.com/waterfall/culprit?key=ag9zfmZpbmRpdC1mb3ItbWVyRAsSDVdmU3VzcGVjdGVkQ0wiMWNocm9taXVtLzUzZWQ1NzIyYmM3M2EyNDNlMjQ4ODBmNWI1NTU0ZGExZDMwMTdhZjYM

Sample Failed Build: https://ci.chromium.org/buildbot/chromium/Android/87881

Sample Failed Step: compile

Original change's description:
> Keep timestamp in aar.py and copy_ex.py when file is not changed
> 
> This removes unnecessary build steps in incremental build.
> 
> Also this mitigates crbug.com/860251 a bit.
> 
> Bug: 810298, 860251
> Change-Id: Ia6aedfea692611a08b1f9a6a2c3963bb69cf32bc
> Reviewed-on: https://chromium-review.googlesource.com/1127565
> Commit-Queue: Takuto Ikuta <tikuta@chromium.org>
> Reviewed-by: Eric Stevenson <estevenson@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#573145}

Change-Id: Icc99c6e07955df939916de244188330fbc9f3a05
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 810298, 860251
Reviewed-on: https://chromium-review.googlesource.com/1128479
Cr-Commit-Position: refs/heads/master@{#573146}