[Mojo] Remove static "bootstrap" state in mojo_js

mojo/apps/js/mojo_runner_delegate.h

Index: mojo/apps/js/mojo_runner_delegate.h
diff --git a/mojo/apps/js/mojo_runner_delegate.h b/mojo/apps/js/mojo_runner_delegate.h
index 899ef01aa1914262893f9e0e809bdd16009f1c33..aa1393f1c508bcebbb03d78499a02d33bdb50e5b 100644
--- a/mojo/apps/js/mojo_runner_delegate.h
+++ b/mojo/apps/js/mojo_runner_delegate.h
@@ -7,6 +7,7 @@
 
 #include "base/compiler_specific.h"
 #include "gin/modules/module_runner_delegate.h"
+#include "mojo/public/system/core.h"
 
 namespace mojo {
 namespace apps {
@@ -16,6 +17,8 @@ class MojoRunnerDelegate : public gin::ModuleRunnerDelegate {
   MojoRunnerDelegate();
   virtual ~MojoRunnerDelegate();
 
+  void Start(gin::Runner* runner, MojoHandle pipe, const std::string& module);
+
  private:
   // From ModuleRunnerDelegate:
   virtual void UnhandledException(gin::Runner* runner,