Plumb the handle signals state to Awakable::Awake().

mojo/edk/system/awakable.cc

Index: mojo/edk/system/awakable.cc
diff --git a/mojo/edk/system/awakable.cc b/mojo/edk/system/awakable.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f3d233639d96a97b6cac845d27306370400bf7b9
--- /dev/null
+++ b/mojo/edk/system/awakable.cc
@@ -0,0 +1,27 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "mojo/edk/system/awakable.h"
+
+#include "base/logging.h"
+
+namespace mojo {
+namespace system {
+
+// static
+MojoResult Awakable::MojoResultForAwakeReason(AwakeReason reason) {
+  switch (reason) {
+    case AwakeReason::SATISFIED:
+      return MOJO_RESULT_OK;
+    case AwakeReason::UNSATISFIABLE:
+      return MOJO_RESULT_FAILED_PRECONDITION;
+    case AwakeReason::CANCELLED:
+      return MOJO_RESULT_CANCELLED;
+  }
+  NOTREACHED();
+  return MOJO_RESULT_INTERNAL;
+}
+
+}  // namespace system
+}  // namespace mojo