Fixed some issues with boilerplate.py to make it work on Windows

Fixed some issues with boilerplate.py to make it work on Windows
It now support backslashes in file paths and uses LF as EOL (instead of CRLF) even on Windows.

BUG=none

Review-Url: https://codereview.chromium.org/2846223002
Cr-Commit-Position: refs/heads/master@{#468063}
Committed: https://chromium.googlesource.com/chromium/src/+/359564ee3ab7d63ea062089c12f1a9e6a60e6170

[emx, 2017-04-28 12:51:22]

emx@chromium.org changed reviewers:
+ rsesek@chromium.org

[emx, 2017-04-28 12:51:23]

Please take a look

[Robert Sesek, 2017-04-28 16:09:07]

lgtm

[emx, 2017-04-28 16:26:33]

The CQ bit was checked by emx@chromium.org

[commit-bot: I haz the power, 2017-04-28 16:27:17]

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, 2017-04-28 18:17:18]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1493396793933760, "parent_rev":
"9309126a1a26b15343a2db4e2a5358dcaa9bd9f8", "commit_rev":
"359564ee3ab7d63ea062089c12f1a9e6a60e6170"}

[commit-bot: I haz the power, 2017-04-28 18:17:30]

Description was changed from

==========
Fixed some issues with boilerplate.py to make it work on Windows
It now support backslashes in file paths and uses LF as EOL (instead of CRLF)
even on Windows.

BUG=none
==========

to

==========
Fixed some issues with boilerplate.py to make it work on Windows
It now support backslashes in file paths and uses LF as EOL (instead of CRLF)
even on Windows.

BUG=none

Review-Url: https://codereview.chromium.org/2846223002
Cr-Commit-Position: refs/heads/master@{#468063}
Committed:
https://chromium.googlesource.com/chromium/src/+/359564ee3ab7d63ea062089c12f1...
==========

[commit-bot: I haz the power, 2017-04-28 18:17:34]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/359564ee3ab7d63ea062089c12f1...