cc: Small cleanup to use an existing function instead of tilings search

cc: Small cleanup to use an existing function instead of tilings search

We have a function on the tiling set that finds tilings at scale.
This patch uses this function.

R=enne

Committed: https://crrev.com/642ba6c8c9a37c51100fe20ac8cc0ac11cfb76d1
Cr-Commit-Position: refs/heads/master@{#291572}

[vmpstr, 2014-08-22 22:57:42]

PTAL

[enne (OOO), 2014-08-22 22:59:11]

The CQ bit was checked by enne@chromium.org

[enne (OOO), 2014-08-22 22:59:12]

lgtm

[commit-bot: I haz the power, 2014-08-22 23:00:34]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/vmpstr@chromium.org/505473002/1

[commit-bot: I haz the power, 2014-08-22 23:49:10]

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

[commit-bot: I haz the power, 2014-08-23 19:48:49]

Committed patchset #1 (1) as deaf67bbc7198337b367a69f2e70c9a1f9d3cad6

[commit-bot: I haz the power, 2014-09-10 02:30:37]

Patchset 1 (id:??) landed as
https://crrev.com/642ba6c8c9a37c51100fe20ac8cc0ac11cfb76d1
Cr-Commit-Position: refs/heads/master@{#291572}