Merge to XFA: Start using allowed C++11 features.

third_party/base/stl_util.h

 // 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.
 
 #ifndef PDFIUM_THIRD_PARTY_BASE_STL_UTIL_H_
 #define PDFIUM_THIRD_PARTY_BASE_STL_UTIL_H_
 
-#include <vector>
-
 namespace pdfium {
 
-// To treat a possibly-empty vector as an array, use these functions.
-// If you know the array will never be empty, you can use &*v.begin()
-// directly, but that is undefined behaviour if |v| is empty.
-template <typename T>
-inline T* vector_as_array(std::vector<T>* v) {
-  return v->empty() ? nullptr : &*v->begin();
-}
-
-template <typename T>
-inline const T* vector_as_array(const std::vector<T>* v) {
-  return v->empty() ? nullptr : &*v->begin();
-}
-
 // 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();
 }
 
 // Test to see if a collection like a vector contains a particular value.
 // Returns true if the value is in the collection.
 template <typename Collection, typename Value>
 bool ContainsValue(const Collection& collection, const Value& value) {
   return std::find(collection.begin(), collection.end(), value) !=
          collection.end();
 }
 
 }  // namespace pdfium
 
 #endif  // PDFIUM_THIRD_PARTY_BASE_STL_UTIL_H_