gfx namespace cleanup.

gfx namespace cleanup.

Remove unnecessary "gfx::" namespace specifiers.
Remove unnecessary enum GpuMemoryBuffer::Format scopes when referring to a format.

TBR=piman@chromium.org

Committed: https://crrev.com/4b42bc6f6347faadfe9d5ef1ef1cc62ffa90216c
Cr-Commit-Position: refs/heads/master@{#324760}

[Daniele Castagna, 2015-04-10 21:06:19]

dcastagna@chromium.org changed reviewers:
+ reveman@chromium.org

[reveman, 2015-04-10 21:10:31]

thanks lgtm

[Daniele Castagna, 2015-04-10 22:11:06]

The CQ bit was checked by dcastagna@chromium.org

[commit-bot: I haz the power, 2015-04-10 22:11:23]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1078253002/1

[commit-bot: I haz the power, 2015-04-11 02:50:42]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-11 02:51:32]

Patchset 1 (id:??) landed as
https://crrev.com/4b42bc6f6347faadfe9d5ef1ef1cc62ffa90216c
Cr-Commit-Position: refs/heads/master@{#324760}