Make async waiter explicit MojoGLES2CreateContext param

mojo/apps/js/main.cc

Index: mojo/apps/js/main.cc
diff --git a/mojo/apps/js/main.cc b/mojo/apps/js/main.cc
index 84231e5971e39bcec4d529b644538bc4a9061197..b5d4486736d60b2666b176880310c3922d8e8146 100644
--- a/mojo/apps/js/main.cc
+++ b/mojo/apps/js/main.cc
@@ -5,7 +5,6 @@
 #include "base/message_loop/message_loop.h"
 #include "gin/public/isolate_holder.h"
 #include "mojo/apps/js/mojo_runner_delegate.h"
-#include "mojo/public/cpp/gles2/gles2.h"
 #include "mojo/public/cpp/system/core.h"
 #include "mojo/public/cpp/system/macros.h"
 
@@ -37,7 +36,6 @@ void Start(MojoHandle pipe, const std::string& module) {
 }  // namespace mojo
 
 extern "C" MOJO_APPS_JS_EXPORT MojoResult CDECL MojoMain(MojoHandle pipe) {
-  mojo::GLES2Initializer gles2;
   mojo::apps::Start(pipe, "mojo/apps/js/main");
   return MOJO_RESULT_OK;
 }