[tests] Enable Object.create JSPerf tests

R=jkummerow@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2461993002
Cr-Commit-Position: refs/heads/master@{#40796}

test/js-perf-test/JSTests.json

@@ -170,6 +170,7 @@
       "results_regexp": "^%s\\-Object\\(Score\\): (.+)$",
       "tests": [
         {"name": "Assign"},
+        {"name": "Create"},
         {"name": "Entries"},
         {"name": "EntriesMegamorphic"},
         {"name": "Values"},