Split web_dev_style tests into separate files.

Split web_dev_style tests into separate files.

Should make adding new tests more manageable.

R=tbreisacher@chromium.org
BUG=none
TEST=code is easier to comprehend

Committed: https://crrev.com/a7b29129a2f4b266b18787c1981fc615c2053171
Cr-Commit-Position: refs/heads/master@{#339528}

[Dan Beam, 2015-07-20 20:49:17]

Patchset #1 (id:1) has been deleted

[Dan Beam, 2015-07-20 21:02:53]

Patchset #1 (id:20001) has been deleted

[Dan Beam, 2015-07-20 21:08:38]

Patchset #1 (id:40001) has been deleted

[Tyler Breisacher (Chromium), 2015-07-20 21:10:01]

lgtm

[Dan Beam, 2015-07-20 21:13:30]

The CQ bit was checked by dbeam@chromium.org

[commit-bot: I haz the power, 2015-07-20 21:13:50]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1242383003/60001

[commit-bot: I haz the power, 2015-07-20 21:16:05]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-07-20 21:16:06]

Try jobs failed on following builders:
  ios_dbg_simulator_ninja on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_dbg_simulator...)
  ios_rel_device_ninja on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_rel_device_ni...)
  mac_chromium_compile_dbg_ng on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_comp...)
  mac_chromium_rel_ng on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...)

[Dan Beam, 2015-07-20 21:23:36]

The CQ bit was checked by dbeam@chromium.org

[Dan Beam, 2015-07-20 21:23:36]

The patchset sent to the CQ was uploaded after l-g-t-m from
tbreisacher@chromium.org
Link to the patchset: https://codereview.chromium.org/1242383003/#ps80001
(title: "merge")

[commit-bot: I haz the power, 2015-07-20 21:23:55]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1242383003/80001

[commit-bot: I haz the power, 2015-07-20 21:53:54]

Committed patchset #2 (id:80001)

[commit-bot: I haz the power, 2015-07-20 21:54:52]

Patchset 2 (id:??) landed as
https://crrev.com/a7b29129a2f4b266b18787c1981fc615c2053171
Cr-Commit-Position: refs/heads/master@{#339528}