Adds a flag to support "Virtual Time" to the blink scheduler

components/scheduler/common/scheduler_switches.h

Index: components/scheduler/common/scheduler_switches.h
diff --git a/components/scheduler/common/scheduler_switches.h b/components/scheduler/common/scheduler_switches.h
new file mode 100644
index 0000000000000000000000000000000000000000..2a8cb0cbd786877c855c1547017d816f229c5ffd
--- /dev/null
+++ b/components/scheduler/common/scheduler_switches.h
@@ -0,0 +1,16 @@
+// Copyright 2015 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.
+
+#ifndef COMPONENTS_SCHEDULER_COMMON_SCHEDULER_SWITCHES_H_
+#define COMPONENTS_SCHEDULER_COMMON_SCHEDULER_SWITCHES_H_
+
+namespace scheduler {
+namespace switches {
+
+extern const char kEnableVirtualizedTime[];
+
+}  // namespace switches
+}  // namespace scheduler
+
+#endif  // COMPONENTS_SCHEDULER_COMMON_SCHEDULER_SWITCHES_H_