Rework standalone to use a synchronous loader that does not invoke Dart code

runtime/bin/dartutils.cc

 // Copyright (c) 2012, 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 "bin/dartutils.h"
 
 #include "bin/crypto.h"
 #include "bin/directory.h"
 #include "bin/extensions.h"
 #include "bin/file.h"
@@ skipping 361 matching lines @@
   Dart_Handle dart_args[kNumArgs];
   dart_args[0] = library_url;
   dart_args[1] = url;
   return Dart_Invoke(DartUtils::BuiltinLib(),
                      NewString("_resolveUri"),
                      kNumArgs,
                      dart_args);
 }
 
 
+Dart_Handle DartUtils::ResolveScript(Dart_Handle url) {
+  const int kNumArgs = 1;
+  Dart_Handle dart_args[kNumArgs];
+  dart_args[0] = url;
+  return Dart_Invoke(DartUtils::BuiltinLib(),
+                     NewString("_resolveScriptUri"),
+                     kNumArgs,
+                     dart_args);
+}
+
+
 static Dart_Handle LoadDataAsync_Invoke(Dart_Handle tag,
                                         Dart_Handle url,
                                         Dart_Handle library_url) {
   const int kNumArgs = 3;
   Dart_Handle dart_args[kNumArgs];
   dart_args[0] = tag;
   dart_args[1] = url;
   dart_args[2] = library_url;
   return Dart_Invoke(DartUtils::BuiltinLib(),
                      DartUtils::NewString("_loadDataAsync"),
@@ skipping 348 matching lines @@
                          kNumArgs,
                          dart_args);
     RETURN_IF_ERROR(result);
   } else if (packages_config != NULL) {
     Dart_Handle result = NewString(packages_config);
     RETURN_IF_ERROR(result);
     const int kNumArgs = 1;
     Dart_Handle dart_args[kNumArgs];
     dart_args[0] = result;
     result = Dart_Invoke(DartUtils::BuiltinLib(),
-                         NewString("_loadPackagesMap"),
+                         NewString("_setPackagesMap"),
                          kNumArgs,
                          dart_args);
     RETURN_IF_ERROR(result);
   }
   return Dart_True();
 }
 
 
 Dart_Handle DartUtils::PrepareForScriptLoading(bool is_service_isolate,
                                                bool trace_loading) {
@@ skipping 503 matching lines @@
       new CObjectString(CObject::NewString(os_error->message()));
   CObjectArray* result = new CObjectArray(CObject::NewArray(3));
   result->SetAt(0, new CObjectInt32(CObject::NewInt32(kOSError)));
   result->SetAt(1, new CObjectInt32(CObject::NewInt32(os_error->code())));
   result->SetAt(2, error_message);
   return result;
 }
 
 }  // namespace bin
 }  // namespace dart