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
Review URL: https://chromiumcodereview.appspot.com/10641006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@143472 0039d316-1c4b-4281-b951-d872f2087c98
3 files changed