Store the XDisplay as a member on NativeViewGLSurfaceOSMesa.

If this is stored as a global variable, it can get closed by one test
and have that affect later tests which is bad. Prevent this by keeping
the XDisplay as a member variable.

TBR=piman@chromium.org
BUG=270918

Review URL: https://codereview.chromium.org/174143002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@252410 0039d316-1c4b-4281-b951-d872f2087c98
Remove -Wno-write-strings from base

This is exceedingly old (from initial GYP file checkin) and seems to be unnecessary.

R=thakis@chromium.org

Review URL: https://codereview.chromium.org/171023003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@252411 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 252410
SVN changes up to revision 252411