Migrate libGLESv3 to ndk_library.

Test: make checkbuild
Bug: http://b/30465923
Change-Id: I6a2f4df7f409596f487879eb7d43a7774dced894
diff --git a/opengl/Android.bp b/opengl/Android.bp
index 9acd2a2..3deb9f0 100644
--- a/opengl/Android.bp
+++ b/opengl/Android.bp
@@ -33,6 +33,13 @@
     srcs: ["include/GLES2/**/*.h"],
 }
 
+ndk_headers {
+    name: "libGLESv3_headers",
+    from: "include",
+    to: "",
+    srcs: ["include/GLES3/**/*.h"],
+}
+
 subdirs = [
     "*",
 ]