Bug 1585727, ensure browser_preferences_usage.js is fission compatible r=mconley

Differential Revision: https://phabricator.services.mozilla.com/D47945

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

browser/base/content/test/performance/browser.ini

@@ -19,7 +19,6 @@ support-files =
 [browser_appmenu.js]
 skip-if = asan || debug || (os == 'win' && bits == 32) || (os == 'win' && processor == 'aarch64') # Bug 1382809, bug 1369959, Win32 because of intermittent OOM failures, bug 1533141 for aarch64
 [browser_preferences_usage.js]
-fail-if = fission
 skip-if = !debug
 [browser_startup.js]
 [browser_startup_content.js]

browser/base/content/test/performance/browser_preferences_usage.js

@@ -132,6 +132,11 @@ add_task(async function startup() {
     },
   };
 
+  if (SpecialPowers.useRemoteSubframes) {
+    // Bug 1585732 - Number of accesses with Fission enabled is higher than without.
+    max = 50;
+  }
+
   let startupRecorder = Cc["@mozilla.org/test/startuprecorder;1"].getService()
     .wrappedJSObject;
   await startupRecorder.done;
@@ -210,6 +215,20 @@ add_task(async function navigate_around() {
     },
   };
 
+  if (SpecialPowers.useRemoteSubframes) {
+    // Bug 1585732 - Number of accesses with Fission enabled is higher than without.
+    max = 50;
+    whitelist = Object.assign(
+      {
+        "fission.rebuild_frameloaders_on_remoteness_change": {
+          min: 1,
+          max: 100,
+        },
+      },
+      whitelist
+    );
+  }
+
   Services.prefs.resetStats();
 
   let tab = await BrowserTestUtils.openNewForegroundTab(