Copy libhello_fuchsia.so into root output directory

runtime/bin/BUILD.gn

 # Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 # 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.
 
 import("gypi_contents.gni")
 import("../runtime_args.gni")
 import("../../build/compiled_action.gni")
 
 declare_args() {
   # Controls the kind of core snapshot linked into the standalone VM. Using a
@@ skipping 874 matching lines @@
     ]
     sources = [
       hello_fuchsia_assembly,
     ]
     cflags = [
       "-nostdlib",
       "-nostartfiles",
     ]
     output_name = "hello_fuchsia"
   }
+
+  #copy("copy_hello_fuchsia_dylib") {
+  #  sources = [
+  #    get_label_info(":hello_fuchsia_lib($shlib_toolchain)", "root_out_dir") +
+  #        "/libhello_fuchsia.so",
+  #  ]
+  #  outputs = [
+  #    "$root_build_dir/{{source_file_part}}",
+  #  ]
+  #  deps = [
+  #    ":hello_fuchsia_dylib($shlib_toolchain)",
+  #  ]
+  #}
 }
 
 executable("process_test") {
   sources = [
     "process_test.cc",
   ]
 }
 
 action("generate_snapshot_test_dat_file") {
   snapshot_test_dat_file = "$root_gen_dir/snapshot_test.dat"
@@ skipping 127 matching lines @@
   ]
   if (is_linux || is_android) {
     cflags = [ "-fPIC" ]
   }
   if (is_win) {
     libs = [ "dart.lib" ]
     abs_root_out_dir = rebase_path(root_out_dir)
     ldflags = [ "/LIBPATH:$abs_root_out_dir" ]
   }
 }