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

runtime/bin/file_system_watcher_fuchsia.cc

Index: runtime/bin/file_system_watcher_fuchsia.cc
diff --git a/runtime/bin/file_system_watcher_fuchsia.cc b/runtime/bin/file_system_watcher_fuchsia.cc
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+++ b/runtime/bin/file_system_watcher_fuchsia.cc
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+// 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.
+
+#if !defined(DART_IO_DISABLED)
+
+#include "platform/globals.h"
+#if defined(TARGET_OS_FUCHSIA)
+
+#include "bin/file_system_watcher.h"
+
+namespace dart {
+namespace bin {
+
+Dart_Handle FileSystemWatcher::ReadEvents(intptr_t id, intptr_t path_id) {
+  UNIMPLEMENTED();
+  return DartUtils::NewDartOSError();
+}
+
+
+intptr_t FileSystemWatcher::GetSocketId(intptr_t id, intptr_t path_id) {
+  UNIMPLEMENTED();
+  return -1;
+}
+
+
+bool FileSystemWatcher::IsSupported() {
+  return false;
+}
+
+
+void FileSystemWatcher::UnwatchPath(intptr_t id, intptr_t path_id) {
+  UNIMPLEMENTED();
+}
+
+
+intptr_t FileSystemWatcher::Init() {
+  return 0;
+}
+
+
+void FileSystemWatcher::Close(intptr_t id) {
+  UNIMPLEMENTED();
+}
+
+
+intptr_t FileSystemWatcher::WatchPath(intptr_t id,
+                                      const char* path,
+                                      int events,
+                                      bool recursive) {
+  UNIMPLEMENTED();
+  return -1;
+}
+
+}  // namespace bin
+}  // namespace dart
+
+#endif  // defined(TARGET_OS_FUCHSIA)
+
+#endif  // !defined(DART_IO_DISABLED)