Use UintToString rather than IntToString in version.cc

base/version.cc

 // Copyright (c) 2012 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 "base/version.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
@@ skipping 150 matching lines @@
   DCHECK(IsValid());
   DCHECK(other.IsValid());
   return CompareVersionComponents(components_, other.components_);
 }
 
 const std::string Version::GetString() const {
   DCHECK(IsValid());
   std::string version_str;
   size_t count = components_.size();
   for (size_t i = 0; i < count - 1; ++i) {
-    version_str.append(IntToString(components_[i]));
+    version_str.append(UintToString(components_[i]));
     version_str.append(".");
   }
-  version_str.append(IntToString(components_[count - 1]));
+  version_str.append(UintToString(components_[count - 1]));
   return version_str;
 }
 
 }  // namespace base