Change ordering of Shell event handlers:

ash/test/shell_test_api.cc

Index: ash/test/shell_test_api.cc
diff --git a/ash/test/shell_test_api.cc b/ash/test/shell_test_api.cc
index 126beabc7186ba76a7d27e2757cad8708bf74b2c..b921535d38ac2ac571db7116af517f57c6149e00 100644
--- a/ash/test/shell_test_api.cc
+++ b/ash/test/shell_test_api.cc
@@ -48,6 +48,10 @@ LauncherModel* ShellTestApi::launcher_model() {
   return shell_->launcher_model_.get();
 }
 
+internal::DragDropController* ShellTestApi::drag_drop_controller() {
+  return shell_->drag_drop_controller_.get();
+}
+
 void ShellTestApi::DisableOutputConfiguratorAnimation() {
 #if defined(OS_CHROMEOS)
   if (shell_->output_configurator_animation_) {