cros: Restrict gaiaURL to be http and https only.

cros: Restrict gaiaURL to be http and https only.

BUG=453994
Committed: https://crrev.com/86076330c0bb161d7660555c4f514200ca897218
Cr-Commit-Position: refs/heads/master@{#314070}

[xiyuan, 2015-01-31 00:26:18]

xiyuan@chromium.org changed reviewers:
+ zelidrag@chromium.org

[xiyuan, 2015-01-31 00:26:19]

Low hanging fruit.

Will work on using postMessage for passing params in a separate CL.

[zel, 2015-01-31 02:32:48]

lgtm

[xiyuan, 2015-01-31 02:54:50]

The CQ bit was checked by xiyuan@chromium.org

[commit-bot: I haz the power, 2015-01-31 02:56:22]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/888173002/20001

[commit-bot: I haz the power, 2015-01-31 11:14:41]

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

[commit-bot: I haz the power, 2015-01-31 11:14:43]

Try jobs failed on following builders:
  win8_chromium_gn_rel on tryserver.chromium.win
(http://build.chromium.org/p/tryserver.chromium.win/builders/win8_chromium_gn_...)

[xiyuan, 2015-01-31 16:23:41]

The CQ bit was checked by xiyuan@chromium.org

[commit-bot: I haz the power, 2015-01-31 16:24:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/888173002/20001

[commit-bot: I haz the power, 2015-01-31 22:08:58]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-01-31 22:09:49]

Patchset 2 (id:??) landed as
https://crrev.com/86076330c0bb161d7660555c4f514200ca897218
Cr-Commit-Position: refs/heads/master@{#314070}