Bug 1599495 - Fission preferences have additional quotation marks r=perftest-reviewers,rwood,stephendonner

This was causing false results when using marionette.get_pref() method

Differential Revision: https://phabricator.services.mozilla.com/D54965

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

taskcluster/taskgraph/transforms/tests.py

@@ -163,9 +163,9 @@ TEST_VARIANTS = {
         'merge': {
             'tier': 2,
             'mozharness': {
-                'extra-options': ['--setpref="fission.autostart=true"',
-                                  '--setpref="dom.serviceWorkers.parent_intercept=true"',
-                                  '--setpref="browser.tabs.documentchannel=true"'],
+                'extra-options': ['--setpref=fission.autostart=true',
+                                  '--setpref=dom.serviceWorkers.parent_intercept=true',
+                                  '--setpref=browser.tabs.documentchannel=true'],
             },
         },
     },

testing/awsy/awsy/test_memory_usage.py

@@ -89,8 +89,7 @@ class TestMemoryUsage(AwsyTestCase):
         # Indicate that we're using tp6 in the perf data.
         self._extra_opts = ["tp6"]
 
-        if self.marionette.get_pref('fission.autostart') or \
-                self.marionette.get_pref('"fission.autostart"'):
+        if self.marionette.get_pref('fission.autostart'):
             self._extra_opts.append("fission-enabled")
 
         # Now we setup the mitm proxy with our tp6 pageset.