Turn off buffer mapping in Chromium

Turn off buffer mapping in Chromium

BUG=chromium:496224
Committed: https://skia.googlesource.com/skia/+/bc233750163ffd48308a687dedea4464e55c0fa9

[bsalomon, 2015-06-26 18:32:13]

bsalomon@google.com changed reviewers:
+ joshualitt@google.com

[bsalomon, 2015-06-26 18:32:21]

The CQ bit was checked by bsalomon@google.com

[commit-bot: I haz the power, 2015-06-26 18:32:42]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1211363006/1

[commit-bot: I haz the power, 2015-06-26 18:32:43]

Note for Reviewers:
The CQ is waiting for an approval.
If you believe that the CL is not ready yet, or if you would like to L-G-T-M
with comments then please uncheck the CQ checkbox.

Waiting for LGTM from valid reviewer(s) till 2015-06-27 00:32 UTC

[joshualitt, 2015-06-26 18:36:29]

On 2015/06/26 18:32:43, commit-bot: I haz the power wrote:
> Note for Reviewers:
> The CQ is waiting for an approval.
> If you believe that the CL is not ready yet, or if you would like to L-G-T-M
> with comments then please uncheck the CQ checkbox.
> 
> Waiting for LGTM from valid reviewer(s) till 2015-06-27 00:32 UTC

lgtm

[commit-bot: I haz the power, 2015-06-26 18:38:28]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/bc233750163ffd48308a687dedea4464e55c0fa9