Add data processing scripts for chrome-speed-metrics

experimental/chrome_speed_metrics/scripts/ct_csv_to_traces.py

Index: experimental/chrome_speed_metrics/scripts/ct_csv_to_traces.py
diff --git a/experimental/chrome_speed_metrics/scripts/ct_csv_to_traces.py b/experimental/chrome_speed_metrics/scripts/ct_csv_to_traces.py
new file mode 100644
index 0000000000000000000000000000000000000000..28b9feab67c296f2c40dec28dd920668e076b4bf
--- /dev/null
+++ b/experimental/chrome_speed_metrics/scripts/ct_csv_to_traces.py
@@ -0,0 +1,32 @@
+# Copyright 2016 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Extracts the urls to trace files from a Cluster Telemetry csv output."""
+
+import csv
+import sys
+
+def CsvToTraces(infile, outfile):
+  traces = []
+  with open(infile) as inf:
+    results = csv.DictReader(inf)
+    for r in results:
+      for t in r['trace'].split(','):
+        traces.append(t)
+
+  with open(outfile, 'w') as outf:
+    for trace in traces:
+      outf.write(trace + '\n')
+
+def main():
+  if len(sys.argv) < 3:
+    print "Usage: {0} <input-file> <output-file>".format(sys.argv[0])
+    return
+
+  input_filename = sys.argv[1]
+  output_filename = sys.argv[2]
+  CsvToTraces(input_filename, output_filename)
+
+if __name__ == "__main__":
+  main()