Add a new FORCE_DETERMINISTIC_BUILD define.

This flag will be used to make the builds determinist, e.g. in place like this one: https://code.google.com/p/chromium/codesearch#chromium/src/base/build_time.h&l=15

BUG=314403

Review URL: https://codereview.chromium.org/324403006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@276801 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed