Migrate files to embedder.

runtime/embedders/android/graphics.h

Index: runtime/embedders/android/graphics.h
diff --git a/samples/android_sample/jni/graphics.h b/runtime/embedders/android/graphics.h
similarity index 80%
rename from samples/android_sample/jni/graphics.h
rename to runtime/embedders/android/graphics.h
index 513589c5f21563b73e3b77fd6af7b0a80f443a56..5ac5b5670c527810d532db3a97a2b93f03962e52 100644
--- a/samples/android_sample/jni/graphics.h
+++ b/runtime/embedders/android/graphics.h
@@ -2,13 +2,13 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-#ifndef GRAPHICS_H
-#define GRAPHICS_H
+#ifndef EMBEDDERS_ANDROID_GRAPHICS_H_
+#define EMBEDDERS_ANDROID_GRAPHICS_H_
 
 #include <android_native_app_glue.h>
 #include <EGL/egl.h>
 
-#include "jni/timer.h"
+#include "embedders/android/timer.h"
 
 class Graphics {
   public:
@@ -29,4 +29,4 @@ class Graphics {
     EGLContext context_;
 };
 
-#endif
+#endif  // EMBEDDERS_ANDROID_GRAPHICS_H_