Revert "Revert "Revert "Add connected socket function to ClientSocketPool and ClientSocketHandle."""

base/stl_util-inl.h

 // Copyright (c) 2006-2008 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.
 
 // STL utility functions.  Usually, these replace built-in, but slow(!),
 // STL functions with more efficient versions.
 
 #ifndef BASE_STL_UTIL_INL_H_
 #define BASE_STL_UTIL_INL_H_
 
@@ skipping 429 matching lines @@
 
 // Translates a set into a vector.
 template<typename T>
 std::vector<T> SetToVector(const std::set<T>& values) {
   std::vector<T> result;
   result.reserve(values.size());
   result.insert(result.begin(), values.begin(), values.end());
   return result;
 }
 
-// Test to see if a set, map, hash_set or hash_map contains a particular key.
-// Returns true if the key is in the collection.
-template <typename Collection, typename Key>
-bool ContainsKey(const Collection& collection, const Key& key) {
-  return collection.find(key) != collection.end();
-}
-
 #endif  // BASE_STL_UTIL_INL_H_