commit 2a4bf9de46bf71de74e22ffc73bcfa681d67cae8
author Takuto Ikuta <tikuta@google.com> Thu Feb 08 21:52:40 2018
committer Commit Bot <commit-bot@chromium.org> Thu Feb 08 21:52:40 2018
tree b73d9db98fac1cabb1a54507179cf053a7c09b65
parent d7d162fe96c44384125ccc7b82c31bd647582285

Do not update file timestamp if file content is not updated in mojom generators

Timestamp of file should not be updated if there is already the file having the same content.
This CL reduces the number of compile tasks in incremental build.

After building all target with linux_chromium_rel_ng builder config, I touched files in this change and see the number of incremental compile tasks when I rebuild all target.
Without this CL: 25158
With this CL: 7098

This CL reduces at most around 18000 compile tasks in incremental build.

Bug: 810298
Change-Id: Ie7f465dd935b6ae5ee901906a25acea741d42530
Reviewed-on: https://chromium-review.googlesource.com/908268
Reviewed-by: Ken Rockot <rockot@chromium.org>
Commit-Queue: Takuto Ikuta <tikuta@google.com>
Cr-Commit-Position: refs/heads/master@{#535533}