Update SplitString calls in chrome.

chrome/common/variations/variations_util.cc

 // Copyright 2014 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.
 
 #include "chrome/common/variations/variations_util.h"
 
 #include <string>
 #include <vector>
 
 #include "base/metrics/field_trial.h"
@@ skipping 16 matching lines @@
 } // namespace
 
 void SetChildProcessLoggingVariationList() {
   std::vector<std::string> experiment_strings;
   variations::GetFieldTrialActiveGroupIdsAsStrings(&experiment_strings);
   crash_keys::SetVariationsList(experiment_strings);
 }
 
 bool AssociateParamsFromString(const std::string& varations_string) {
   // Format: Trial1.Group1:k1/v1/k2/v2,Trial2.Group2:k1/v1/k2/v2
-  std::vector<std::string> experiment_groups;
-  base::SplitString(varations_string, ',', &experiment_groups);
-  for (const auto& experiment_group : experiment_groups) {
-    std::vector<std::string> experiment;
-    base::SplitString(experiment_group, ':', &experiment);
+  for (const base::StringPiece& experiment_group : base::SplitStringPiece(
+           varations_string, ",",
+           base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL)) {
+    std::vector<base::StringPiece> experiment = base::SplitStringPiece(
+        experiment_group, ":", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
     if (experiment.size() != 2)
       return false;
 
-    std::vector<std::string> group_parts;
-    base::SplitString(experiment[0], '.', &group_parts);
+    std::vector<std::string> group_parts = base::SplitString(
+        experiment[0], ".", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
     if (group_parts.size() != 2)
       return false;
 
-    std::vector<std::string> key_values;
-    base::SplitString(experiment[1], '/', &key_values);
+    std::vector<std::string> key_values = base::SplitString(
+        experiment[1], "/", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
     if (key_values.size() % 2 != 0)
       return false;
 
     std::map<std::string, std::string> params;
     for (size_t i = 0; i < key_values.size(); i += 2) {
       std::string key = EscapeValue(key_values[i]);
       std::string value = EscapeValue(key_values[i + 1]);
       params[key] = value;
     }
     std::string trial = EscapeValue(group_parts[0]);
@@ skipping 18 matching lines @@
     }
     base::FieldTrialList::CreateFieldTrial(group.study, group.group_name);
   }
 }
 
 void AssociateDefaultFieldTrialConfig() {
   AssociateParamsFromFieldTrialConfig(kFieldTrialConfig);
 }
 
 }  // namespace chrome_variations