Changes to make isolate reload functionality work with the --dfe option.

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")
 
 # Generate a resources.cc file for the service isolate without Observatory.
 action("gen_resources_cc") {
@@ skipping 275 matching lines @@
     "$target_gen_dir/resources_gen.cc",
     "address_sanitizer.cc",
     "builtin.cc",
     "builtin.h",
     "loader.cc",
     "loader.h",
 
     # Very limited native resolver provided.
     "builtin_common.cc",
     "builtin_gen_snapshot.cc",
+    "dfe.cc",
+    "dfe.h",
     "gen_snapshot.cc",
     "vmservice_impl.cc",
     "vmservice_impl.h",
   ]
 
   include_dirs = [ ".." ]
 
   if (dart_use_tcmalloc) {
     deps += [ "//third_party/tcmalloc" ]
   }
@@ skipping 356 matching lines @@
 }
 
 dart_executable("dart") {
   extra_deps = [
     "..:libdart_jit",
     ":dart_snapshot_cc",
     "../observatory:standalone_observatory_archive",
   ]
   extra_sources = [
     "builtin_nolib.cc",
+    "dfe.cc",
+    "dfe.h",
     "loader.cc",
     "loader.h",
   ]
 }
 
 dart_executable("dart_precompiled_runtime") {
   extra_configs = [ "..:dart_precompiled_runtime_config" ]
   extra_deps = [
     "..:libdart_precompiled_runtime",
     "../observatory:standalone_observatory_archive",
@@ skipping 26 matching lines @@
     ":generate_metadata_cc_file",
     ":generate_web_sql_cc_file",
     ":generate_svg_cc_file",
     ":generate_web_audio_cc_file",
     "..:libdart_nosnapshot_with_precompiler",
   ]
   extra_defines = [ "NO_OBSERVATORY" ]
   extra_sources = [
     "builtin.cc",
     "builtin.h",
+    "dfe.cc",
+    "dfe.h",
     "loader.cc",
     "loader.h",
     "observatory_assets_empty.cc",
     "snapshot_empty.cc",
 
     # Include generated source files.
     "$target_gen_dir/builtin_gen.cc",
     "$target_gen_dir/io_gen.cc",
     "$target_gen_dir/io_patch_gen.cc",
     "$target_gen_dir/html_gen.cc",
@@ skipping 122 matching lines @@
   # the tests here.
   vm_tests = rebase_path(vm_tests_list, ".", "../vm")
 
   sources = [
               "error_exit.cc",
               "error_exit.h",
               "snapshot_utils.cc",
               "snapshot_utils.h",
               "builtin_nolib.cc",
               "run_vm_tests.cc",
+              "dfe.cc",
+              "dfe.h",
             ] + builtin_impl_tests_list + vm_tests
 
   if (!is_win) {
     ldflags = [ "-rdynamic" ]
   }
 
   if (is_win) {
     libs = [
       "iphlpapi.lib",
       "psapi.lib",
@@ skipping 42 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" ]
   }
 }