1 files changed, 33 insertions, 0 deletions
diff --git a/devtools/shared/specs/reflow.js b/devtools/shared/specs/reflow.js
new file mode 100644
index 0000000000..e8c036bba6
--- /dev/null
+++ b/devtools/shared/specs/reflow.js
@@ -0,0 +1,33 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+const { Arg, generateActorSpec } = require("devtools/shared/protocol");
+
+const reflowSpec = generateActorSpec({
+  typeName: "reflow",
+
+  events: {
+    /**
+     * The reflows event is emitted when reflows have been detected. The event
+     * is sent with an array of reflows that occured. Each item has the
+     * following properties:
+     * - start {Number}
+     * - end {Number}
+     * - isInterruptible {Boolean}
+     */
+    reflows: {
+      type: "reflows",
+      reflows: Arg(0, "array:json"),
+    },
+  },
+
+  methods: {
+    start: { oneway: true },
+    stop: { oneway: true },
+  },
+});
+
+exports.reflowSpec = reflowSpec;