[ios Mojo] Implemented chrome://version.

components/version_ui/version_handler_helper.cc

 // Copyright 2015 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 "components/version_ui/version_handler_helper.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/metrics/field_trial.h"
@@ skipping 17 matching lines @@
     base::ReplaceChars(line, "-", kNonBreakingHyphenUTF8String, &line);
     variations.push_back(line);
   }
 #else
   // In release mode, display the hashes only.
   variations::GetFieldTrialActiveGroupIdsAsStrings(&variations);
 #endif
   return variations;
 }
 
-#if defined(OS_IOS)
-std::unique_ptr<base::Value> GetVariationsList() {
-  std::vector<std::string> variations = GetVariations();
-  std::unique_ptr<base::ListValue> variations_list(new base::ListValue);
-  for (std::vector<std::string>::const_iterator it = variations.begin();
-       it != variations.end(); ++it) {
-    variations_list->AppendString(*it);
-  }
-
-  return std::move(variations_list);
-}
-#endif
-
 }  // namespace version_ui