Fix Tools/Scripts/check-blink-deps

Fix Tools/Scripts/check-blink-deps

Chromium's checkdeps.py has moved but the
script was never updated.

TEST=Manually run the script and it works!

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=175733

[Julien - ping for review, 2014-06-07 00:14:41]

Trivial script fix that I found while tinkering with DEPS.

[Dirk Pranke, 2014-06-07 00:21:49]

lgtm

[Julien - ping for review, 2014-06-07 00:31:42]

The CQ bit was checked by jchaffraix@chromium.org

[commit-bot: I haz the power, 2014-06-07 00:32:05]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jchaffraix@chromium.org/325473003/1

[commit-bot: I haz the power, 2014-06-07 01:16:34]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  linux_blink_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/linux_blink_rel/builds/1...)

[commit-bot: I haz the power, 2014-06-07 03:54:48]

Change committed as 175733