Fuchsia: Build standalone VM. Make it run "Hello, World!".

runtime/bin/extensions_fuchsia.cc

-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// 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 "platform/globals.h"
-#if defined(TARGET_OS_ANDROID)
+#if defined(TARGET_OS_FUCHSIA)
 
 #include "bin/extensions.h"
 #include <dlfcn.h>  // NOLINT
 
 namespace dart {
 namespace bin {
 
 const char* kPrecompiledLibraryName = "libprecompiled.so";
 const char* kPrecompiledInstructionsSymbolName = "_kInstructionsSnapshot";
 const char* kPrecompiledDataSymbolName = "_kDataSnapshot";
@@ skipping 11 matching lines @@
   const char* err_str = dlerror();
   if (err_str != NULL) {
     return Dart_NewApiError(err_str);
   }
   return Dart_Null();
 }
 
 }  // namespace bin
 }  // namespace dart
 
-#endif  // defined(TARGET_OS_ANDROID)
+#endif  // defined(TARGET_OS_FUCHSIA)