Purge the App Launcher code from Windows.

ui/app_list/views/test/apps_grid_view_test_api.cc

Index: ui/app_list/views/test/apps_grid_view_test_api.cc
diff --git a/ui/app_list/views/test/apps_grid_view_test_api.cc b/ui/app_list/views/test/apps_grid_view_test_api.cc
index b617c2717cc2b03a61cac8aa840d4e552b1ced80..cd38a191e1cd693c9c7e149fe1212681e58699ea 100644
--- a/ui/app_list/views/test/apps_grid_view_test_api.cc
+++ b/ui/app_list/views/test/apps_grid_view_test_api.cc
@@ -45,16 +45,6 @@ void AppsGridViewTestApi::PressItemAt(int index) {
       ui::KeyEvent(ui::ET_KEY_PRESSED, ui::VKEY_RETURN, ui::EF_NONE));
 }
 
-void AppsGridViewTestApi::DisableSynchronousDrag() {
-#if defined(OS_WIN)
-  DCHECK(view_->synchronous_drag_.Get() == NULL)
-      << "DisableSynchronousDrag needs to "
-         "be called before "
-         "synchronous_drag_ is set up.";
-  view_->use_synchronous_drag_ = false;
-#endif
-}
-
 bool AppsGridViewTestApi::HasPendingPageFlip() const {
   return view_->page_flip_timer_.IsRunning() ||
          view_->pagination_model()->has_transition();