Porting to x64 Android. Remove redefinitions of log2 and log2f.

Porting to x64 Android. Remove redefinitions of log2 and log2f.

BUG=
R=kbr@chromium.org

Committed: 261106

[Anton, 2014-04-01 18:25:45]

Built locally with both ARM32 and x64. This definitions don't appear to be
needed anymore and on x64 they cause collisions.
I am not a committer, so will need the patch landed for me, assuming there is
not CQ.

[scottmg, 2014-04-01 18:28:44]

I don't think we do the .diff dance for mesa, but please update README.chromium
in case someone wants to pull a mesa update that isn't completely different.

[Ken Russell (switch to Gerrit), 2014-04-01 22:55:20]

LGTM

As Scott points out, please update src/third_party/mesa/README.chromium when you
roll Mesa's entry in src/DEPS. Thanks.

Please also ask bajones or zmo for review on the DEPS roll. I'll be on business
travel next week.

[Ken Russell (switch to Gerrit), 2014-04-01 22:56:15]

On 2014/04/01 22:55:20, Ken Russell wrote:
> LGTM
> 
> As Scott points out, please update src/third_party/mesa/README.chromium when
you
> roll Mesa's entry in src/DEPS. Thanks.
> 
> Please also ask bajones or zmo for review on the DEPS roll. I'll be on
business
> travel next week.

Also: when you prepare the CL rolling Mesa, please manually submit try jobs to
the win_gpu, linux_gpu, and mac_gpu try servers, in addition to the default set.
(These will hopefully be part of the default set soon.)

[rmcilroy, 2014-04-02 10:58:41]

On 2014/04/01 22:56:15, Ken Russell wrote:
> On 2014/04/01 22:55:20, Ken Russell wrote:
> > LGTM
> > 
> > As Scott points out, please update src/third_party/mesa/README.chromium when
> you
> > roll Mesa's entry in src/DEPS. Thanks.
> > 
> > Please also ask bajones or zmo for review on the DEPS roll. I'll be on
> business
> > travel next week.
> 
> Also: when you prepare the CL rolling Mesa, please manually submit try jobs to
> the win_gpu, linux_gpu, and mac_gpu try servers, in addition to the default
set.
> (These will hopefully be part of the default set soon.)

I'm going to try committing this manually for Anton, since he doesn't have
comitter access. Thanks.

[rmcilroy, 2014-04-02 10:59:38]

Committed patchset #1 manually as r261106 (presubmit successful).

[Nico, 2014-04-22 16:52:50]

Did you file an upstream bug on mesa for this? (They've been pretty responsive
on our other bugs, e.g. https://bugs.freedesktop.org/show_bug.cgi?id=75336
https://bugs.freedesktop.org/show_bug.cgi?id=70743 etc). This will make life
easier the next time we update our mesa version.