add SK_SUPPORT_LEGACY_INT_COLORMATRIX to stage skia change

add SK_SUPPORT_LEGACY_INT_COLORMATRIX to stage skia change

Will support this skia change: https://codereview.chromium.org/967943002/

BUG=

Committed: https://crrev.com/533e541cc4cdfed4f1461e63eb19333b84a3b8da
Cr-Commit-Position: refs/heads/master@{#321885}

[reed1, 2015-03-23 18:58:08]

reed@google.com changed reviewers:
+ fmalita@chromium.org

[reed1, 2015-03-23 18:58:12]

The CQ bit was checked by reed@google.com

[commit-bot: I haz the power, 2015-03-23 18:58:35]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1031713003/1

[commit-bot: I haz the power, 2015-03-23 18:58:36]

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

[commit-bot: I haz the power, 2015-03-23 18:58:36]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer,
_not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[f(malita), 2015-03-23 18:59:51]

The CQ bit was checked by fmalita@chromium.org

[f(malita), 2015-03-23 18:59:51]

lgtm

[commit-bot: I haz the power, 2015-03-23 19:00:31]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1031713003/1

[commit-bot: I haz the power, 2015-03-23 22:54:50]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-23 22:55:46]

Patchset 1 (id:??) landed as
https://crrev.com/533e541cc4cdfed4f1461e63eb19333b84a3b8da
Cr-Commit-Position: refs/heads/master@{#321885}