[CT] Split benchmarkArgs around one or more consecutive white spaces

ct/go/worker_scripts/fix_archives/main.go

 // fix_archives is an application that validates the webpage archives of a
 // pageset type and deletes the archives which are found to deliver
 // inconsistent benchmark results.
 // See https://code.google.com/p/chromium/issues/detail?id=456883 for more
 // details.
 package main
 
 import (
         "encoding/csv"
         "flag"
@@ skipping 145 matching lines @@
                                 "--page-set-base-dir=" + pathToPagesets,
                                 "--also-run-disabled-tests",
                         }
                         // Add output dir.
                         outputDirArgValue := filepath.Join(localOutputDir, pagesetName, strconv.Itoa(repeatNum))
                         args = append(args, "--output-dir="+outputDirArgValue)
                         // Figure out which browser should be used.
                         args = append(args, "--browser=exact", "--browser-executable="+chromiumBinary)
                         // Split benchmark args if not empty and append to args.
                         if *benchmarkArgs != "" {
-                                for _, benchmarkArg := range strings.Split(*benchmarkArgs, " ") {
+                                for _, benchmarkArg := range strings.Fields(*benchmarkArgs) {
                                         args = append(args, benchmarkArg)
                                 }
                         }
                         // Add browserArgs if not empty to args.
                         if *browserArgs != "" {
                                 args = append(args, "--extra-browser-args="+*browserArgs)
                         }
                         // Set the PYTHONPATH to the pagesets and the telemetry dirs.
                         env := []string{
                                 fmt.Sprintf("PYTHONPATH=%s:%s:%s:%s:$PYTHONPATH", pathToPagesets, util.TelemetryBinariesDir, util.TelemetrySrcDir, util.CatapultSrcDir),
@@ skipping 96 matching lines @@
         reader.FieldsPerRecord = -1
         rawCSVdata, err := reader.ReadAll()
         if err != nil {
                 return nil, nil, fmt.Errorf("Could not read %s: %s", csvPath, err)
         }
         if len(rawCSVdata) != 2 {
                 return nil, nil, fmt.Errorf("No data in %s", csvPath)
         }
         return rawCSVdata[0], rawCSVdata[1], nil
 }