webkitpy: Make all regex strings use raw string literals.

webkitpy: Make all regex strings use raw string literals.

This fixes the anomalous-backslash-in-string pylint warnings.

The advantage of using raw string literals is that it makes the behavior
of backslashes a little easier to understand; with normal string literals,
"\a\b\c" is "<BEL><BS><backslash><lower-case-c>", whereas with raw
string literals, each of those backslashes is just a backslash character.

The advantage of this pylint warning in general is that enforces
escaping literal backslashes in regular strings, which makes it
clear that a backslash was intended rather than an escape sequence.

BUG=643937
Committed: https://crrev.com/c7beb14b269407802ce44aad29b778529ee473ed
Cr-Commit-Position: refs/heads/master@{#416636}

[qyearsley, 2016-09-05 00:18:18]

qyearsley@chromium.org changed reviewers:
+ dpranke@chromium.org

[Dirk Pranke, 2016-09-06 01:25:16]

lgtm

[qyearsley, 2016-09-06 14:56:02]

The CQ bit was checked by qyearsley@chromium.org

[commit-bot: I haz the power, 2016-09-06 14:56:20]

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, 2016-09-06 16:20:58]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-09-06 16:27:12]

Description was changed from

==========
webkitpy: Make all regex strings use raw string literals.

This fixes the anomalous-backslash-in-string pylint warnings.

The advantage of using raw string literals is that it makes the behavior
of backslashes a little easier to understand; with normal string literals,
"\a\b\c" is "<BEL><BS><backslash><lower-case-c>", whereas with raw
string literals, each of those backslashes is just a backslash character.

The advantage of this pylint warning in general is that enforces
escaping literal backslashes in regular strings, which makes it
clear that a backslash was intended rather than an escape sequence.

BUG=643937
==========

to

==========
webkitpy: Make all regex strings use raw string literals.

This fixes the anomalous-backslash-in-string pylint warnings.

The advantage of using raw string literals is that it makes the behavior
of backslashes a little easier to understand; with normal string literals,
"\a\b\c" is "<BEL><BS><backslash><lower-case-c>", whereas with raw
string literals, each of those backslashes is just a backslash character.

The advantage of this pylint warning in general is that enforces
escaping literal backslashes in regular strings, which makes it
clear that a backslash was intended rather than an escape sequence.

BUG=643937

Committed: https://crrev.com/c7beb14b269407802ce44aad29b778529ee473ed
Cr-Commit-Position: refs/heads/master@{#416636}
==========

[commit-bot: I haz the power, 2016-09-06 16:27:13]

Patchset 2 (id:??) landed as
https://crrev.com/c7beb14b269407802ce44aad29b778529ee473ed
Cr-Commit-Position: refs/heads/master@{#416636}