Added method to convert base::Time to a Java timestamp.
BUG=247382

Review URL: https://chromiumcodereview.appspot.com/22791013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@224744 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 224744
Remove obsolete suppressions

BUG=270312
TBR=dewittj@chromium.org

Review URL: https://codereview.chromium.org/24316004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@224745 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 224745