Remove all usages of MojoGLES2GetGLES2Interface().

Remove all usages of MojoGLES2GetGLES2Interface().
All html_viewer entry points now have Mojo C thunks.

R=piman@chromium.org
BUG=453591
Committed: https://crrev.com/36152635213bc6633b030275f0cf34d2d04dff99
Cr-Commit-Position: refs/heads/master@{#322275}

[alhaad, 2015-03-25 19:35:04]

alhaad@chromium.org changed reviewers:
- jamesr@chromium.org

[piman, 2015-03-25 19:36:45]

lgtm

[alhaad, 2015-03-25 19:37:32]

The CQ bit was checked by alhaad@chromium.org

[commit-bot: I haz the power, 2015-03-25 19:37:45]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1035813002/1

[commit-bot: I haz the power, 2015-03-25 23:40:11]

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

[commit-bot: I haz the power, 2015-03-25 23:40:12]

Try jobs failed on following builders:
  mac_chromium_compile_dbg_ng on tryserver.chromium.mac (JOB_TIMED_OUT, no build
URL)
Timed out jobs are not retried to avoid causing additional load on the builders
with large pending queues.

[alhaad, 2015-03-25 23:51:31]

The CQ bit was checked by alhaad@chromium.org

[commit-bot: I haz the power, 2015-03-25 23:52:18]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1035813002/1

[commit-bot: I haz the power, 2015-03-26 00:36:23]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-26 00:37:26]

Patchset 1 (id:??) landed as
https://crrev.com/36152635213bc6633b030275f0cf34d2d04dff99
Cr-Commit-Position: refs/heads/master@{#322275}