Fix osmesa lib path regression in Linux introduced in r82008.
Fix osmesa lib path regression in Linux introduced in r82008.

BUG=none
TEST=a few webgl tests in linux turns green
TBR=evan@chromium.org
Review URL: http://codereview.chromium.org/6873060

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@82043 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