Fuchsia: Initial check-in.

runtime/vm/thread_interrupter_fuchsia.cc

+// 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_FUCHSIA)
+
+#include "vm/thread_interrupter.h"
+
+#include "platform/assert.h"
+
+namespace dart {
+
+void ThreadInterrupter::InterruptThread(OSThread* thread) {
+  UNIMPLEMENTED();
+}
+
+
+void ThreadInterrupter::InstallSignalHandler() {
+  UNIMPLEMENTED();
+}
+
+
+void ThreadInterrupter::RemoveSignalHandler() {
+  UNIMPLEMENTED();
+}
+
+}  // namespace dart
+
+#endif  // defined(TARGET_OS_FUCHSIA)