Fix http/tests/devtools/oopif/oopif-performance-cpu-profiles.js" is flaky

Make it sorted for real. Fixes one source of flakiness.

BUG=848398

Change-Id: I14e40f509e6363e06eeb5ed21bc239b59269bff8
Reviewed-on: https://chromium-review.googlesource.com/1095479Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Reviewed-by: Arthur Sonzogni <arthursonzogni@chromium.org>
Commit-Queue: Alexei Filippov <alph@chromium.org>
Cr-Commit-Position: refs/heads/master@{#567005}

third_party/WebKit/LayoutTests/http/tests/devtools/oopif/oopif-performance-cpu-profiles.js

@@ -12,7 +12,7 @@
   await TestRunner.navigatePromise('resources/page.html');
   await PerformanceTestRunner.stopTimeline();
 
-  for (const track of PerformanceTestRunner.timelineModel().tracks().sort((a, b) => a.url > b.url)) {
+  for (const track of PerformanceTestRunner.timelineModel().tracks().sort((a, b) => a.url.compareTo(b.url))) {
     if (track.type !== TimelineModel.TimelineModel.TrackType.MainThread)
       continue;
     TestRunner.addResult(`name: ${track.name}`);