GitLab

We are converting gesture's timestamp to microseconds at many
places (e.g. for latency measure). So let's not truncate the
timestamp to milliseconds level when creating the event.

BUG=243443
TEST=None.

Review URL: https://chromiumcodereview.appspot.com/16159007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@202773 0039d316-1c4b-4281-b951-d872f2087c98