fix(bench press): Don’t use unicode in console reporter to prevent problems

modules/benchpress/src/reporter/console_reporter.js

@@ -84,7 +84,9 @@ export class ConsoleReporter extends Reporter {
         var mean = Statistic.calculateMean(sample);
         var cv = Statistic.calculateCoefficientOfVariation(sample, mean);
         var formattedCv = NumberWrapper.isNaN(cv) ? 'NaN' : Math.floor(cv);
-        return `${ConsoleReporter._formatNum(mean)}\u00B1${formattedCv}%`;
+        // Note: Don't use the unicode character for +- as it might cause
+        // hickups consoles...
+        return `${ConsoleReporter._formatNum(mean)}+-${formattedCv}%`;
       })
     );
     return PromiseWrapper.resolve(null);

modules/benchpress/test/reporter/console_reporter_spec.js

@@ -92,7 +92,7 @@ export function main() {
       })]);
       expect(log).toEqual([
         '======== | ========',
-        '4.00±25% | 7.50±20%'
+        '4.00+-25% | 7.50+-20%'
       ]);
     });