Bug 1558271 - Update mozilla/browsertime snapshot to...

Bug 1558271 - Update mozilla/browsertime snapshot to b8c1becaee74970a6f6e4222a64d1e2e18f20cd6 r=nalexander

Changes include a fix for visual metrics calculations on desktop, and appending visual metrics information to gecko profiles.

Additionally, add the browsertime-results directory to gitignore.

Differential Revision: https://phabricator.services.mozilla.com/D34412

--HG--
extra : moz-landing-system : lando

.gitignore

@@ -101,6 +101,9 @@ devtools/client/debugger/assets/module-manifest.json
 # Ignore node_modules directories in devtools
 devtools/**/node_modules
 
+# Ignore browsertime output directory
+browsertime-results
+
 # Tag files generated by GNU Global
 GTAGS
 GRTAGS

tools/browsertime/package.json

@@ -5,7 +5,7 @@
   "license": "MPL-2.0",
   "dependencies": {},
   "devDependencies": {
-    "browsertime": "https://github.com/mozilla/browsertime/tarball/e09ad6e8c4754bdd8688b569d9ea1482933a06dd"
+    "browsertime": "https://github.com/mozilla/browsertime/tarball/b8c1becaee74970a6f6e4222a64d1e2e18f20cd6"
   },
   "notes(private)": "We don't want to publish to npm, so this is marked as private",
   "private": true