JasonLeyba: When we compile a js_fragment for a specific browser, we include a bunch of standard compiler definitions (e.g. goog.userAgent.ASSUME_CHROME=true) Not all of these definitions are used by every fragment, which causes a ton of spam on stdout about unknownDefines.  It's safe for us to ignore these warnings, so let's turn them off and have a quiet build again.
JasonLeyba: When we compile a js_fragment for a specific browser, we include a
bunch of standard compiler definitions (e.g. goog.userAgent.ASSUME_CHROME=true)
Not all of these definitions are used by every fragment, which causes a ton
of spam on stdout about unknownDefines.  It's safe for us to ignore these
warnings, so let's turn them off and have a quiet build again.

r17807

krosenvold/selenium-git-release-candidate,krosenvold/selenium-git-release-candidate,krosenvold/selenium-git-release-candidate,krosenvold/selenium-git-release-candidate,krosenvold/selenium-git-release-candidate,krosenvold/selenium-git-release-candidate,krosenvold/selenium-git-release-candidate,krosenvold/selenium-git-release-candidate