Revert "Reland r42300: "HttpRequestHeaders refactor."""

base/string_util.cc

Index: base/string_util.cc
diff --git a/base/string_util.cc b/base/string_util.cc
index 494d09d2a605171ea0eab162b7e8fc70ed8c97d9..19c1735308acf7dd908a9e1c966b356db7e6626c 100644
--- a/base/string_util.cc
+++ b/base/string_util.cc
@@ -1324,54 +1324,6 @@ void SplitStringDontTrim(const std::string& str,
   SplitStringT(str, s, false, r);
 }
 
-template <typename STR>
-static void SplitStringUsingSubstrT(const STR& str,
-                                    const STR& s,
-                                    std::vector<STR>* r) {
-  typename STR::size_type begin_index = 0;
-  while (true) {
-    const typename STR::size_type end_index = str.find(s, begin_index);
-    if (end_index == STR::npos) {
-      const STR term = str.substr(begin_index);
-      STR tmp;
-      TrimWhitespace(term, TRIM_ALL, &tmp);
-      r->push_back(tmp);
-      return;
-    }
-    const STR term = str.substr(begin_index, end_index - begin_index);
-    STR tmp;
-    TrimWhitespace(term, TRIM_ALL, &tmp);
-    r->push_back(tmp);
-    begin_index = end_index + s.size();
-  }
-}
-
-void SplitStringUsingSubstr(const string16& str,
-                            const string16& s,
-                            std::vector<string16>* r) {
-  SplitStringUsingSubstrT(str, s, r);
-}
-
-void SplitStringUsingSubstr(const std::string& str,
-                            const std::string& s,
-                            std::vector<std::string>* r) {
-  SplitStringUsingSubstrT(str, s, r);
-}
-
-std::vector<string16> SplitStringUsingSubstr(const string16& str,
-                                             const string16& s) {
-  std::vector<string16> result;
-  SplitStringUsingSubstr(str, s, &result);
-  return result;
-}
-
-std::vector<std::string> SplitStringUsingSubstr(const std::string& str,
-                                                const std::string& s) {
-  std::vector<std::string> result;
-  SplitStringUsingSubstr(str, s, &result);
-  return result;
-}
-
 template<typename STR>
 static size_t TokenizeT(const STR& str,
                         const STR& delimiters,