tests/performance/utils: use commonUtils.params() (#8780)

Author: alxndrsn

tests/performance/utils.js

@@ -8,14 +8,13 @@ var nextTick = (typeof process === 'undefined' || process.browser) ?
 
 var grep;
 var iterations;
-if (global.window && global.window.location && global.window.location.search) {
-  grep = global.window.location.search.match(/[&?]grep=([^&]+)/);
-  grep = grep && decodeURIComponent(grep[1]);
-  iterations = global.window.location.search.match(/[&?]iterations=([^&]+)/);
-  iterations = iterations && parseInt(iterations[1], 10);
-} else if (process && process.env) {
-  grep = process.env.GREP;
-  iterations = process.env.ITERATIONS && parseInt(process.env.ITERATIONS, 10);
+const params = commonUtils.params();
+if (commonUtils.isNode()) {
+  grep = params.GREP;
+  iterations = params.ITERATIONS && parseInt(params.ITERATIONS, 10);
+} else {
+  grep = params.grep;
+  iterations = params.iterations && parseInt(params.iterations, 10);
 }
 
 var adapterUsed;