change overlay scrollbar hover show to hover fade in

cc/layers/scrollbar_layer_unittest.cc

Index: cc/layers/scrollbar_layer_unittest.cc
diff --git a/cc/layers/scrollbar_layer_unittest.cc b/cc/layers/scrollbar_layer_unittest.cc
index 68613e87e33360ad4da748168d35c9d155151e2f..6972590044491a29e845d6c250102c982bbac7b0 100644
--- a/cc/layers/scrollbar_layer_unittest.cc
+++ b/cc/layers/scrollbar_layer_unittest.cc
@@ -106,11 +106,11 @@ class ScrollbarLayerTest : public testing::Test {
     layer_tree_settings_.use_zero_copy = true;
     layer_tree_settings_.scrollbar_animator =
         LayerTreeSettings::ANDROID_OVERLAY;
-    layer_tree_settings_.scrollbar_show_delay =
+    layer_tree_settings_.scrollbar_fade_in_delay =
         base::TimeDelta::FromMilliseconds(20);
     layer_tree_settings_.scrollbar_fade_out_delay =
         base::TimeDelta::FromMilliseconds(20);
-    layer_tree_settings_.scrollbar_fade_out_duration =
+    layer_tree_settings_.scrollbar_fade_duration =
         base::TimeDelta::FromMilliseconds(20);
 
     scrollbar_layer_id_ = -1;