Call delay_show Cancel in ScrollbarAnimationControlller::Show

cc/input/scrollbar_animation_controller.cc

Index: cc/input/scrollbar_animation_controller.cc
diff --git a/cc/input/scrollbar_animation_controller.cc b/cc/input/scrollbar_animation_controller.cc
index cde87abc19f53720c9e4ef50b025b1ca6cc1fa29..4906ef4737db1921018b018ad1b8243652714805 100644
--- a/cc/input/scrollbar_animation_controller.cc
+++ b/cc/input/scrollbar_animation_controller.cc
@@ -243,6 +243,8 @@ void ScrollbarAnimationController::DidMouseLeave() {
   vertical_controller_->DidMouseLeave();
   horizontal_controller_->DidMouseLeave();
 
+  delayed_scrollbar_show_.Cancel();
+
   if (ScrollbarsHidden() || Captured())
     return;
 
@@ -332,6 +334,7 @@ bool ScrollbarAnimationController::Captured() const {
 }
 
 void ScrollbarAnimationController::Show() {
+  delayed_scrollbar_show_.Cancel();
   ApplyOpacityToScrollbars(1.0f);
 }