Fix member variable order in WebGestureCurve implementations

webkit/glue/touch_fling_gesture_curve.cc

Index: webkit/glue/touch_fling_gesture_curve.cc
diff --git a/webkit/glue/touch_fling_gesture_curve.cc b/webkit/glue/touch_fling_gesture_curve.cc
index d33a6894aa8965d3696d4f50791dc9b0083f1139..523500db1cc7085b10941835a07b3d57f03bdbb9 100644
--- a/webkit/glue/touch_fling_gesture_curve.cc
+++ b/webkit/glue/touch_fling_gesture_curve.cc
@@ -165,6 +165,8 @@ bool TouchFlingGestureCurve::apply(double time, WebGestureCurveTarget* target) {
   cumulative_scroll_ = WebSize(scroll.x, scroll.y);
 
   if (time + time_offset_ < curve_duration_ || scroll_increment != WebPoint()) {
+    // scrollBy() could delete this curve if the animation is over, so don't
+    // touch any member variables after making that call.
     target->scrollBy(scroll_increment);
     return true;
   }