Enable floating point touch co-ordinates in EventSender

WebTouchPoint has used floating point co-ordinate and radius values for awhile, but we've never allowed generating non-integer values via EventSender.

BUG=323935

Review URL: https://codereview.chromium.org/316303002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@275340 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed