Update from https://crrev.com/308996

cc/scheduler/commit_earlyout_reason.h

+// Copyright 2014 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 CC_SCHEDULER_COMMIT_EARLYOUT_REASON_H_
+#define CC_SCHEDULER_COMMIT_EARLYOUT_REASON_H_
+
+#include "base/logging.h"
+
+namespace cc {
+
+enum class CommitEarlyOutReason {
+  ABORTED_OUTPUT_SURFACE_LOST,
+  ABORTED_NOT_VISIBLE,
+  FINISHED_NO_UPDATES,
+};
+
+inline const char* CommitEarlyOutReasonToString(CommitEarlyOutReason reason) {
+  switch (reason) {
+    case CommitEarlyOutReason::ABORTED_OUTPUT_SURFACE_LOST:
+      return "CommitEarlyOutReason::ABORTED_OUTPUT_SURFACE_LOST";
+    case CommitEarlyOutReason::ABORTED_NOT_VISIBLE:
+      return "CommitEarlyOutReason::ABORTED_NOT_VISIBLE";
+    case CommitEarlyOutReason::FINISHED_NO_UPDATES:
+      return "CommitEarlyOutReason::FINISHED_NO_UPDATES";
+  }
+  NOTREACHED();
+  return "???";
+}
+
+inline bool CommitEarlyOutHandledCommit(CommitEarlyOutReason reason) {
+  return reason == CommitEarlyOutReason::FINISHED_NO_UPDATES;
+}
+
+}  // namespace cc
+
+#endif  // CC_SCHEDULER_COMMIT_EARLYOUT_REASON_H_