C++ Readability review for holte

components/rappor/rappor_metric.cc

Index: components/rappor/rappor_metric.cc
diff --git a/components/rappor/rappor_metric.cc b/components/rappor/rappor_metric.cc
index 2da3b312b77dbe72ebd416b6f3b24635d2126a64..ae2d0701254df12d98feaeffcac880fd0a82bd48 100644
--- a/components/rappor/rappor_metric.cc
+++ b/components/rappor/rappor_metric.cc
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+// Change for readability
+
 #include "components/rappor/rappor_metric.h"
 
 #include "base/logging.h"
@@ -30,7 +32,7 @@ ByteVector RapporMetric::GetReport(const std::string& secret) const {
   // client's secret key + real data as a seed.  The inclusion of the secret
   // in the seed avoids correlations between real and fake data.
   // The seed isn't a human-readable string.
-  std::string personalization_string = metric_name_ +
+  const std::string personalization_string = metric_name_ +
       std::string(bytes().begin(), bytes().end());
   HmacByteVectorGenerator hmac_generator(bytes().size(), secret,
                                          personalization_string);