Change handling of dart-ext: URIs for native extensions.

runtime/bin/extensions.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/extensions.h"
 
 #include <stdio.h>
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/globals.h"
 #include "bin/dartutils.h"
 #include "bin/file.h"
 
 
 namespace dart {
 namespace bin {
 
 Dart_Handle Extensions::LoadExtension(const char* extension_path,
                                       Dart_Handle parent_library) {
+  if (strncmp(extension_path, "http://", 7) == 0) {
+    return Dart_NewApiError("Cannot load native extensions over http:");
+  }
+
   char* library_path = strdup(extension_path);
 
   if (library_path == NULL) {
     return Dart_NewApiError("Out of memory in LoadExtension");
   }
 
   // Extract the directory and the extension name from the path.
   char* last_path_separator = strrchr(library_path, '/');
   if (last_path_separator == NULL) {
     last_path_separator = strrchr(library_path, '\\');
@@ skipping 39 matching lines @@
   for (int i = 0; strings[i] != NULL; i++) {
     index += snprintf(result + index, size - index, "%s", strings[i]);
   }
   ASSERT(index == size - 1);
   ASSERT(result[size - 1] == '\0');
   return result;
 }
 
 }  // namespace bin
 }  // namespace dart