win vs2015: fix variable shadowing warnings

net/base/url_util.cc

Index: net/base/url_util.cc
diff --git a/net/base/url_util.cc b/net/base/url_util.cc
index 8540e193d3c53b32bfd3937c81ec4bba744fecda..791f1258fba8ac121cbf93ae74ebb4c8d21a35f0 100644
--- a/net/base/url_util.cc
+++ b/net/base/url_util.cc
@@ -43,8 +43,6 @@ GURL AppendOrReplaceQueryParameter(const GURL& url,
                                    &value_range)) {
     const base::StringPiece key(
         input.data() + key_range.begin, key_range.len);
-    const base::StringPiece value(
-        input.data() + value_range.begin, value_range.len);

[scottmg, 2015/02/20 05:02:06]

this one seems a little tricky because it's shadowing a parameter, but as far as
I can see this value is never used.

     std::string key_value_pair;
     // Check |replaced| as only the first pair should be replaced.
     if (!replaced && key == param_name) {