Begin implementing V8 bindings for Mojo

mojo/public/bindings/js/v8_environment.h

Index: mojo/public/bindings/js/v8_environment.h
diff --git a/mojo/shell/android/mojo_main.h b/mojo/public/bindings/js/v8_environment.h
similarity index 50%
copy from mojo/shell/android/mojo_main.h
copy to mojo/public/bindings/js/v8_environment.h
index 161ca71d684b5f2665c7ca4fe677f50f895462a2..01c45cb852e1dc86bd8b5fc77acaece8054483f5 100644
--- a/mojo/shell/android/mojo_main.h
+++ b/mojo/public/bindings/js/v8_environment.h
@@ -2,15 +2,15 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef MOJO_SHELL_ANDROID_MOJO_MAIN_H_
-#define MOJO_SHELL_ANDROID_MOJO_MAIN_H_
-
-#include <jni.h>
+#ifndef MOJO_PUBLIC_BINDINGS_JS_V8_ENVIRONMENT_H_
+#define MOJO_PUBLIC_BINDINGS_JS_V8_ENVIRONMENT_H_
 
 namespace mojo {
+namespace js {
 
-bool RegisterMojoMain(JNIEnv* env);
+void Initialize();
 
+}  // namespace js
 }  // namespace mojo
 
-#endif  // MOJO_SHELL_ANDROID_MOJO_MAIN_H_
+#endif  // MOJO_PUBLIC_BINDINGS_JS_V8_ENVIRONMENT_H_