Fuchsia changes for my recent cl.

runtime/bin/fuchsia_test.cc

 // Copyright (c) 2016, 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.
 
 #include <dart_api.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
 #include "bin/log.h"
@@ skipping 54 matching lines @@
 static Dart_Handle PrepareBuiltinLibrary(const char* script) {
   Log::Print("Creating builtin library uri\n");
   Dart_Handle builtin_uri = Dart_NewStringFromCString("builtin_uri");
   DART_CHECK_VALID(builtin_uri);
 
   Log::Print("Creating builtin library script string\n");
   Dart_Handle builtin_script = Dart_NewStringFromCString(script);
   DART_CHECK_VALID(builtin_script);
 
   Log::Print("Loading builtin library\n");
-  Dart_Handle status = Dart_LoadLibrary(builtin_uri, builtin_script, 0, 0);
+  Dart_Handle status =
+      Dart_LoadLibrary(builtin_uri, Dart_Null(), builtin_script, 0, 0);
   DART_CHECK_VALID(status);
 
   Log::Print("Looking up builtin library\n");
   Dart_Handle builtin_library = Dart_LookupLibrary(builtin_uri);
   DART_CHECK_VALID(builtin_library);
 
   Log::Print("Setting up native resolver for builtin library\n");
   status = Dart_SetNativeResolver(builtin_library, NativeLookup, NativeSymbol);
   DART_CHECK_VALID(status);
 
   return builtin_library;
 }
 
 static Dart_Handle PrepareScriptLibrary(const char* script) {
   Log::Print("Creating script URI string\n");
   Dart_Handle script_uri = Dart_NewStringFromCString("script_uri");
   DART_CHECK_VALID(script_uri);
 
   Log::Print("Creating script string\n");
   Dart_Handle script_string = Dart_NewStringFromCString(script);
   DART_CHECK_VALID(script_string);
 
   Log::Print("Loading script into new library\n");
-  Dart_Handle status = Dart_LoadLibrary(script_uri, script_string, 0, 0);
+  Dart_Handle status =
+      Dart_LoadLibrary(script_uri, Dart_Null(), script_string, 0, 0);
   DART_CHECK_VALID(status);
 
   Log::Print("Looking up script library\n");
   Dart_Handle library = Dart_LookupLibrary(script_uri);
   DART_CHECK_VALID(library);
 
   return library;
 }
 
 static Dart_Handle LoadInternalLibrary() {
@@ skipping 100 matching lines @@
   Log::Print("Success!\n");
   return 0;
 }
 
 }  // namespace bin
 }  // namespace dart
 
 int main(void) {
   return dart::bin::Main();
 }