Fix member variable order in WebGestureCurve implementations

webkit/support/web_gesture_curve_mock.cc

Index: webkit/support/web_gesture_curve_mock.cc
diff --git a/webkit/support/web_gesture_curve_mock.cc b/webkit/support/web_gesture_curve_mock.cc
index 00e635850d2c96987f49662d80d5a3ab1f741021..43fe5cc0ff1e43031c60dee7231223489589e541 100644
--- a/webkit/support/web_gesture_curve_mock.cc
+++ b/webkit/support/web_gesture_curve_mock.cc
@@ -22,7 +22,9 @@ bool WebGestureCurveMock::apply(double time,
   WebKit::WebSize displacement(velocity_.x * time, velocity_.y * time);
   WebKit::WebPoint increment(displacement.width - cumulative_scroll_.width,
                              displacement.height - cumulative_scroll_.height);
-  target->scrollBy(increment);
   cumulative_scroll_ = displacement;
+  // scrollBy() could delete this curve if the animation is over, so don't
+  // touch any member variables after making that call.
+  target->scrollBy(increment);
   return true;
 }