Add a simple one shot and repeating timer API for Mojo.js.

mojo/apps/js/bindings/gl/module.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MOJO_APPS_JS_BINDINGS_GL_MODULE_H_
 #define MOJO_APPS_JS_BINDINGS_GL_MODULE_H_
 
 #include "gin/public/wrapper_info.h"
 #include "v8/include/v8.h"
 
 namespace mojo {
 namespace js {
 namespace gl {
 
 extern const char* kModuleName;
-v8::Local<v8::ObjectTemplate> GetModuleTemplate(v8::Isolate* isolate);
+v8::Local<v8::Value> GetModule(v8::Isolate* isolate);
 
 }  // namespace gl
 }  // namespace js
 }  // namespace mojo
 
 #endif  // MOJO_APPS_JS_BINDINGS_GL_H_