Use nv contrl x extension to query nvidia driver version.

Use nv contrl x extension to query nvidia driver version.

This is trying to reland the reverted CL http://codereview.chromium.org/10536232/.  I added third_party/libXNVCtrl to content/gpu/DEPS.

So we can do it in browser process, not wait until gpu process launches and a gl context is created.

This is tested on my linux box with NVIDIA driver.

We need to put more code to tell chrome (Linux/NVIDIA) that we have enough information for blacklisting, so at GPU launch time we don't need to collect GPUInfo.

Will do it in a followup CL.

BUG=122912
TEST=tree green
R=jam@chromium.org
TBR=kbr,piman
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=143472

[Zhenyao Mo, 2012-06-21 19:08:37]

jam: please have a look.

[jam, 2012-06-21 21:33:56]

lgtm

http://codereview.chromium.org/10641006/diff/1/content/gpu/gpu_info_collector...
File content/gpu/gpu_info_collector_linux.cc (right):

http://codereview.chromium.org/10641006/diff/1/content/gpu/gpu_info_collector...
content/gpu/gpu_info_collector_linux.cc:177: return "";
nit: here and below, prefer return std::string()

http://codereview.chromium.org/10641006/diff/1/content/gpu/gpu_info_collector...
content/gpu/gpu_info_collector_linux.cc:247: fprintf(stderr, "%s\n\n\n",
driver_version.c_str());
nit: spacing

[Zhenyao Mo, 2012-06-21 22:30:51]

https://chromiumcodereview.appspot.com/10641006/diff/1/content/gpu/gpu_info_c...
File content/gpu/gpu_info_collector_linux.cc (right):

https://chromiumcodereview.appspot.com/10641006/diff/1/content/gpu/gpu_info_c...
content/gpu/gpu_info_collector_linux.cc:177: return "";
On 2012/06/21 21:33:57, John Abd-El-Malek wrote:
> nit: here and below, prefer return std::string()

Done.

https://chromiumcodereview.appspot.com/10641006/diff/1/content/gpu/gpu_info_c...
content/gpu/gpu_info_collector_linux.cc:247: fprintf(stderr, "%s\n\n\n",
driver_version.c_str());
On 2012/06/21 21:33:57, John Abd-El-Malek wrote:
> nit: spacing

this line is for local debugging purpose.  removed in the final CL