cros: Fix mouse over-scroll animation not happening.

ui/app_list/app_list_item_view.cc

Index: ui/app_list/app_list_item_view.cc
diff --git a/ui/app_list/app_list_item_view.cc b/ui/app_list/app_list_item_view.cc
index c06f15bcd5bded46080e63b7805aa018fa2b1777..2dc02af72655783ceb3aa959d4bb80022e2cebd7 100644
--- a/ui/app_list/app_list_item_view.cc
+++ b/ui/app_list/app_list_item_view.cc
@@ -216,7 +216,9 @@ void AppListItemView::ShowContextMenuForView(views::View* source,
 
 void AppListItemView::StateChanged() {
   if (state() == BS_HOT || state() == BS_PUSHED) {
-    apps_grid_view_->SetSelectedItem(this);
+    // Don't auto select item if there is a running page transition.
+    if (!apps_grid_view_->HasPageTransition())
+      apps_grid_view_->SetSelectedItem(this);
     title_->SetEnabledColor(kTitleHoverColor);
   } else {
     apps_grid_view_->ClearSelectedItem(this);