From 7163a5815c3445eaf645e4fa86254d68fe0b3a2d Mon Sep 17 00:00:00 2001
From: Paul Irish <paul.irish@gmail.com>
Date: Mon, 9 Oct 2017 12:07:21 -0700
Subject: [PATCH] core(devtools-model): fix missing Runtime.experiments

---
 .../lib/traces/devtools-timeline-model.js           | 13 ++++++++-----
 lighthouse-core/lib/web-inspector.js                |  4 ++++
 2 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/lighthouse-core/lib/traces/devtools-timeline-model.js b/lighthouse-core/lib/traces/devtools-timeline-model.js
index c6e45157f180..acbe8d77d7ea 100644
--- a/lighthouse-core/lib/traces/devtools-timeline-model.js
+++ b/lighthouse-core/lib/traces/devtools-timeline-model.js
@@ -36,11 +36,14 @@ class TimelineModel {
     // populate with events
     this._tracingModel.reset();
 
-    ConsoleQuieter.mute({prefix: 'timelineModel'});
-    this._tracingModel.addEvents(events);
-    this._tracingModel.tracingComplete();
-    this._timelineModel.setEvents(this._tracingModel);
-    ConsoleQuieter.unmuteAndFlush();
+    try {
+      ConsoleQuieter.mute({prefix: 'timelineModel'});
+      this._tracingModel.addEvents(events);
+      this._tracingModel.tracingComplete();
+      this._timelineModel.setEvents(this._tracingModel);
+    } finally {
+      ConsoleQuieter.unmuteAndFlush();
+    }
 
     return this;
   }
diff --git a/lighthouse-core/lib/web-inspector.js b/lighthouse-core/lib/web-inspector.js
index a5e07cf8dbff..c10c39a065cd 100644
--- a/lighthouse-core/lib/web-inspector.js
+++ b/lighthouse-core/lib/web-inspector.js
@@ -26,6 +26,10 @@ module.exports = (function() {
 
   global.Runtime = global.Runtime || {};
 
+  // Required for devtools-timeline-model
+  global.Runtime.experiments = global.Runtime.experiments || {};
+  global.Runtime.experiments.isEnabled = global.Runtime.experiments.isEnabled || (_ => false);
+
   const _queryParam = global.Runtime.queryParam;
   global.Runtime.queryParam = function(arg) {
     switch (arg) {