command_buffer: Table based command dispatch for Common commands

command_buffer: Table based command dispatch for Common commands

Change command dispatch from "switch" based to table based as
done with GLES2 Commands. This will probably show marginal performance
enhancement but will also raise code consistency.

BUG=394570
Committed: https://crrev.com/9249663e8624a36d95d80d24325f225a2e2c953c
Cr-Commit-Position: refs/heads/master@{#312780}

[hj.r.chung, 2015-01-19 07:05:33]

heejin.r.chung@samsung.com changed reviewers:
+ piman@chromium.org, vmiura@chromium.org

[hj.r.chung, 2015-01-19 07:07:13]

On 2015/01/19 07:05:33, hj.r.chung wrote:
> mailto:heejin.r.chung@samsung.com changed reviewers:
> + mailto:piman@chromium.org, mailto:vmiura@chromium.org

ptal!

[vmiura, 2015-01-23 03:22:18]

lgtm

[hj.r.chung, 2015-01-23 04:48:36]

On 2015/01/23 03:22:18, vmiura wrote:
> lgtm

thanks!

[hj.r.chung, 2015-01-23 04:48:41]

The CQ bit was checked by heejin.r.chung@samsung.com

[commit-bot: I haz the power, 2015-01-23 04:49:40]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/855033002/20001

[commit-bot: I haz the power, 2015-01-23 05:42:27]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-01-23 05:43:11]

Patchset 2 (id:??) landed as
https://crrev.com/9249663e8624a36d95d80d24325f225a2e2c953c
Cr-Commit-Position: refs/heads/master@{#312780}