import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

devtools/client/memory/reducers/sizes.js

@@ -0,0 +1,18 @@
+/* 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 { actions } = require("../constants");
+const { immutableUpdate } = require("devtools/shared/DevToolsUtils");
+
+const handlers = Object.create(null);
+
+handlers[actions.RESIZE_SHORTEST_PATHS] = function (sizes, { size }) {
+  return immutableUpdate(sizes, { shortestPathsSize: size });
+};
+
+module.exports = function (sizes = { shortestPathsSize: .5 }, action) {
+  const handler = handlers[action.type];
+  return handler ? handler(sizes, action) : sizes;
+};