Fixed bit-testing to use '&' instead of '|', found by /analyze

Fixed bit-testing to use '&' instead of '|', found by /analyze

/analyze pointed out that the bit testing in gles2_cmd_decoder.cc was
always returning true due to the wrong operator being used.

Warnings were:

src\gpu\command_buffer\service\gles2_cmd_decoder.cc
(3128) : warning C6316: Incorrect operator:  tested expression is constant and non-zero.  Use bitwise-and to determine whether bits are set.
(5103) : warning C6316: Incorrect operator:  tested expression is constant and non-zero.  Use bitwise-and to determine whether bits are set.

BUG=427616
Committed: https://crrev.com/182491565a86a2de1d1bd14582f54eeecf5a1191
Cr-Commit-Position: refs/heads/master@{#302343}

[brucedawson, 2014-10-30 22:51:47]

brucedawson@chromium.org changed reviewers:
+ zmo@chromium.org

[brucedawson, 2014-10-30 22:51:48]

I've been running VC++'s /analyze on Chrome to see what bugs it finds and it
found some worrisome code that was added in change
ee7579229ff7e9e5ae28bf53aea069251499d7da.

Basically it points out that bit-testing with | doesn't work. I'm not sure what
the implications of this change are -- presumably fewer clears on gles2
platforms, for better or worse?

[Zhenyao Mo, 2014-10-31 17:29:44]

On 2014/10/30 22:51:48, brucedawson wrote:
> I've been running VC++'s /analyze on Chrome to see what bugs it finds and it
> found some worrisome code that was added in change
> ee7579229ff7e9e5ae28bf53aea069251499d7da.
> 
> Basically it points out that bit-testing with | doesn't work. I'm not sure
what
> the implications of this change are -- presumably fewer clears on gles2
> platforms, for better or worse?

Thanks for catching this.

LGTM

[brucedawson, 2014-10-31 20:54:07]

The CQ bit was checked by brucedawson@chromium.org

[commit-bot: I haz the power, 2014-10-31 20:54:41]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/690943004/1

[commit-bot: I haz the power, 2014-10-31 23:02:42]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-10-31 23:03:15]

Patchset 1 (id:??) landed as
https://crrev.com/182491565a86a2de1d1bd14582f54eeecf5a1191
Cr-Commit-Position: refs/heads/master@{#302343}