Pass ui::LatencyInfo correct with unified gesture detector on Aura.

BUG=379812
TEST=GestureRecognizerTest.LatencyPassedFromTouchEvent

Review URL: https://codereview.chromium.org/309823002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@274602 0039d316-1c4b-4281-b951-d872f2087c98
  void ReceivedAckImpl(bool prevent_defaulted) {
    scoped_ptr<ui::TouchEvent> event(queue_.front());
    dispatcher_->ProcessedTouchEvent(event.get(), window_,
        prevent_defaulted ? ui::ER_HANDLED : ui::ER_UNHANDLED);
    queue_.pop();
  }

  void ReceivedAckImpl(bool prevent_defaulted) {
    scoped_ptr<ui::TouchEvent> event(queue_.front());
    dispatcher_->ProcessedTouchEvent(event.get(), window_,
        prevent_defaulted ? ui::ER_HANDLED : ui::ER_UNHANDLED);
    queue_.pop();
  }
