[MD WebUI] Use html_out_file as prefix for depfile.

[MD WebUI] Use html_out_file as prefix for depfile.

This CL fixes an issue where changing the out file of a vulcanize build
would not cause the depfile to be retargeted, leading to a stale depfile
and breaking builds.

BUG=673825
Review-Url: https://codereview.chromium.org/2720223002
Cr-Commit-Position: refs/heads/master@{#453515}
Committed: https://chromium.googlesource.com/chromium/src/+/133b4458dc3c57dd9d1212f5a35abc48e352b550

[calamity, 2017-02-28 04:07:51]

The CQ bit was checked by calamity@chromium.org to run a CQ dry run

[calamity, 2017-02-28 04:07:53]

calamity@chromium.org changed reviewers:
+ dbeam@chromium.org

[commit-bot: I haz the power, 2017-02-28 04:08:46]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[Dan Beam, 2017-02-28 04:11:00]

lgtm

[calamity, 2017-02-28 04:21:32]

The CQ bit was unchecked by calamity@chromium.org

[calamity, 2017-02-28 04:21:39]

The CQ bit was checked by calamity@chromium.org

[commit-bot: I haz the power, 2017-02-28 04:21:50]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-02-28 05:57:29]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1488255699880680, "parent_rev":
"eac868b87946406cbcce4633a76fca5e65ab9291", "commit_rev":
"133b4458dc3c57dd9d1212f5a35abc48e352b550"}

[commit-bot: I haz the power, 2017-02-28 05:58:07]

Description was changed from

==========
[MD WebUI] Use html_out_file as prefix for depfile.

This CL fixes an issue where changing the out file of a vulcanize build
would not cause the depfile to be retargeted, leading to a stale depfile
and breaking builds.

BUG=673825
==========

to

==========
[MD WebUI] Use html_out_file as prefix for depfile.

This CL fixes an issue where changing the out file of a vulcanize build
would not cause the depfile to be retargeted, leading to a stale depfile
and breaking builds.

BUG=673825

Review-Url: https://codereview.chromium.org/2720223002
Cr-Commit-Position: refs/heads/master@{#453515}
Committed:
https://chromium.googlesource.com/chromium/src/+/133b4458dc3c57dd9d1212f5a35a...
==========

[commit-bot: I haz the power, 2017-02-28 05:58:08]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/133b4458dc3c57dd9d1212f5a35a...