[Mojo] Remove static "bootstrap" state in mojo_js

mojo/apps/js/mojo_runner_delegate.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_MOJO_RUNNER_DELEGATE_H_
 #define MOJO_APPS_JS_MOJO_RUNNER_DELEGATE_H_
 
 #include "base/compiler_specific.h"
 #include "gin/modules/module_runner_delegate.h"
+#include "mojo/public/system/core.h"
 
 namespace mojo {
 namespace apps {
 
 class MojoRunnerDelegate : public gin::ModuleRunnerDelegate {
  public:
   MojoRunnerDelegate();
   virtual ~MojoRunnerDelegate();
 
+  void Start(gin::Runner* runner, MojoHandle pipe, const std::string& module);
+
  private:
   // From ModuleRunnerDelegate:
   virtual void UnhandledException(gin::Runner* runner,
                                   gin::TryCatch& try_catch) OVERRIDE;
 
   DISALLOW_COPY_AND_ASSIGN(MojoRunnerDelegate);
 };
 
 }  // namespace apps
 }  // namespace mojo
 
 #endif  // MOJO_APPS_JS_MOJO_RUNNER_DELEGATE_H_