Revert color analysis optimization which breaks on Android.

Revert color analysis optimization which breaks on Android.

This CL is a revert of r284166 which caused dominant color calculation
on Android to have the wrong swizzle format, producing results with
swapped R and B values.

BUG=482120
Committed: https://crrev.com/2ade003cadb854dbf60f9840ab8878e90d34750f
Cr-Commit-Position: refs/heads/master@{#330046}

[calamity, 2015-05-14 05:04:00]

calamity@chromium.org changed reviewers:
+ asvitkine@chromium.org

[Alexei Svitkine (slow), 2015-05-14 14:46:59]

lgtm

[calamity, 2015-05-15 04:08:26]

The CQ bit was checked by calamity@chromium.org

[commit-bot: I haz the power, 2015-05-15 04:09:14]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1141503003/1

[commit-bot: I haz the power, 2015-05-15 05:01:40]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-15 05:02:53]

Patchset 1 (id:??) landed as
https://crrev.com/2ade003cadb854dbf60f9840ab8878e90d34750f
Cr-Commit-Position: refs/heads/master@{#330046}