Collect GPU information (vendor id and device id) in Linux.
Collect GPU information (vendor id and device id) in Linux.

BUG=49579
TEST=about:gpu page shows correct vendor-id and device-id in linux

Review URL: http://codereview.chromium.org/5861007

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@69836 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser