Need to check invalid scheme in navigator content utils

Need to check invalid scheme in navigator content utils

According to spec, scheme value should not contain a colon. So, this cl checks if scheme contains a colon.

"The scheme value, if it contains a colon (as in "mailto:"), will never match anything, since schemes don't contain colons."

Spec: http://www.whatwg.org/specs/web-apps/current-work/#custom-handlers

BUG=none

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=174748

[gyuyoung-inactive, 2014-05-23 00:53:11]

Add kentaro to reviewer.

[gyuyoung-inactive, 2014-05-23 03:47:39]

Add abarth as well.

[haraken, 2014-05-23 07:03:45]

LGTM

[gyuyoung-inactive, 2014-05-23 12:15:19]

The CQ bit was checked by gyuyoung.kim@samsung.com

[commit-bot: I haz the power, 2014-05-23 12:15:30]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/gyuyoung.kim@samsung.com/292203007/20001

[commit-bot: I haz the power, 2014-05-23 13:46:32]

FYI, CQ is re-trying this CL (attempt #1).
Please consider checking whether the failures are real,
and report flakes to chrome-troopers@google.com.
The failing builders are:
  win_blink_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/win_blink_rel/builds/8895)

[commit-bot: I haz the power, 2014-05-23 15:09:06]

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

[commit-bot: I haz the power, 2014-05-23 15:09:07]

Try jobs failed on following builders:
  win_blink_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/win_blink_rel/builds/8908)

[gyuyoung-inactive, 2014-05-24 01:59:29]

The CQ bit was checked by gyuyoung.kim@samsung.com

[commit-bot: I haz the power, 2014-05-24 02:00:10]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/gyuyoung.kim@samsung.com/292203007/20001

[commit-bot: I haz the power, 2014-05-24 02:51:58]

Change committed as 174748