Revert of Use experimental app list position whenever virtual keyboard is enabled.

ui/app_list/test/app_list_test_view_delegate.cc

Index: ui/app_list/test/app_list_test_view_delegate.cc
diff --git a/ui/app_list/test/app_list_test_view_delegate.cc b/ui/app_list/test/app_list_test_view_delegate.cc
index 0f4aa5f0f0405ff5a1235078b216f469e05bc28c..41d725befdaaefbdbd686b9cdb0379accf3c981a 100644
--- a/ui/app_list/test/app_list_test_view_delegate.cc
+++ b/ui/app_list/test/app_list_test_view_delegate.cc
@@ -129,10 +129,6 @@
   return users_;
 }
 
-bool AppListTestViewDelegate::ShouldCenterWindow() const {
-  return false;
-}
-
 void AppListTestViewDelegate::ReplaceTestModel(int item_count) {
   model_.reset(new AppListTestModel);
   model_->PopulateApps(item_count);