Make the cube spin in the JS mojo app.

mojo/apps/js/mojo_runner_delegate.cc

Index: mojo/apps/js/mojo_runner_delegate.cc
diff --git a/mojo/apps/js/mojo_runner_delegate.cc b/mojo/apps/js/mojo_runner_delegate.cc
index 11f30b957b3896bf1643b7ad3e76a27d092b68ef..ba9de40f1b5391ad924a0409b0859ffecfa26232 100644
--- a/mojo/apps/js/mojo_runner_delegate.cc
+++ b/mojo/apps/js/mojo_runner_delegate.cc
@@ -9,6 +9,7 @@
 #include "gin/converter.h"
 #include "gin/modules/console.h"
 #include "gin/modules/module_registry.h"
+#include "gin/modules/timer.h"
 #include "gin/try_catch.h"
 #include "mojo/apps/js/bindings/core.h"
 #include "mojo/apps/js/bindings/gl/module.h"
@@ -46,6 +47,7 @@ void StartCallback(base::WeakPtr<gin::Runner> runner,
 MojoRunnerDelegate::MojoRunnerDelegate()
     : ModuleRunnerDelegate(GetModuleSearchPaths()) {
   AddBuiltinModule(gin::Console::kModuleName, gin::Console::GetModule);
+  AddBuiltinModule(gin::TimerModule::kName, gin::TimerModule::GetModule);
   AddBuiltinModule(js::Core::kModuleName, js::Core::GetModule);
   AddBuiltinModule(js::Support::kModuleName, js::Support::GetModule);
   AddBuiltinModule(mojo::js::gl::kModuleName, mojo::js::gl::GetModule);