[Fuchsia] Fix Platform.executable and Platform.resolvedExecutable

runtime/bin/platform_macos.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 "platform/globals.h"
 #if defined(HOST_OS_MACOS)
 
 #include "bin/platform.h"
 
 #include <CoreFoundation/CoreFoundation.h>
@@ skipping 174 matching lines @@
   char** result;
   result = reinterpret_cast<char**>(Dart_ScopeAllocate(i * sizeof(*result)));
   for (intptr_t current = 0; current < i; current++) {
     result[current] = environ[current];
   }
   return result;
 #endif
 }
 
 
+const char* Platform::GetExecutableName() {
+  return executable_name_;
+}
+
+
 const char* Platform::ResolveExecutablePath() {
   // Get the required length of the buffer.
   uint32_t path_size = 0;
   if (_NSGetExecutablePath(NULL, &path_size) == 0) {
     return NULL;
   }
   // Allocate buffer and get executable path.
   char* path = DartUtils::ScopedCString(path_size);
   if (_NSGetExecutablePath(path, &path_size) != 0) {
     return NULL;
   }
   // Return the canonical path as the returned path might contain symlinks.
   const char* canon_path = File::GetCanonicalPath(path);
   return canon_path;
 }
 
 
 void Platform::Exit(int exit_code) {
   exit(exit_code);
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // defined(HOST_OS_MACOS)