deleted file mode 100644
--- a/mfbt/Algorithm.h
+++ /dev/null
@@ -1,43 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim: set ts=8 sts=2 et sw=2 tw=80: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/* A polyfill for `<algorithm>`. */
-
-#ifndef mozilla_Algorithm_h
-#define mozilla_Algorithm_h
-
-namespace mozilla {
-
-// Returns true if all elements in the range [aFirst, aLast)
-// satisfy the predicate aPred.
-template <class Iter, class Pred>
-bool AllOf(Iter aFirst, Iter aLast, Pred aPred)
-{
-  for (; aFirst != aLast; ++aFirst) {
-    if (!aPred(*aFirst)) {
-      return false;
-    }
-  }
-  return true;
-}
-
-// This is a `constexpr` alternative to AllOf. It should
-// only be used for compile-time computation because it uses recursion.
-// XXX: once support for GCC 4.9 is dropped, this function should be removed
-// and AllOf should be made `constexpr`.
-// XXX: This implementation requires RandomAccessIterator.
-template <class Iter, class Pred>
-constexpr bool ConstExprAllOf(Iter aFirst, Iter aLast, Pred aPred)
-{
-  return aFirst == aLast ? true :
-    aLast - aFirst == 1 ? aPred(*aFirst) :
-    ConstExprAllOf(aFirst, aFirst + (aLast - aFirst) / 2, aPred) &&
-    ConstExprAllOf(aFirst + (aLast - aFirst) / 2, aLast, aPred);
-}
-
-} // namespace mozilla
-
-#endif // mozilla_Algorithm_h

--- a/mfbt/moz.build
+++ b/mfbt/moz.build
@@ -7,17 +7,16 @@
 with Files("**"):
     BUG_COMPONENT = ("Core", "MFBT")
 
 TEST_DIRS += ['tests']
 
 Library('mfbt')
 
 EXPORTS.mozilla = [
-    'Algorithm.h',
     'Alignment.h',
     'AllocPolicy.h',
     'AlreadyAddRefed.h',
     'Array.h',
     'ArrayUtils.h',
     'Assertions.h',
     'Atomics.h',
     'Attributes.h',

deleted file mode 100644
--- a/mfbt/tests/TestAlgorithm.cpp
+++ /dev/null
@@ -1,56 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim: set ts=8 sts=2 et sw=2 tw=80: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this file,
- * You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#include "mozilla/Algorithm.h"
-#include "mozilla/Assertions.h"
-#include <algorithm>
-
-static constexpr bool even(int32_t n) { return !(n & 1); }
-static constexpr bool odd(int32_t n) { return (n & 1); }
-
-void TestAllOf()
-{
-  using namespace mozilla;
-  using namespace std;
-
-  int32_t arr1[3] = {1, 2, 3};
-  MOZ_RELEASE_ASSERT(!AllOf(begin(arr1), end(arr1), even));
-  MOZ_RELEASE_ASSERT(!AllOf(begin(arr1), end(arr1), odd));
-
-  int32_t arr2[3] = {1, 3, 5};
-  MOZ_RELEASE_ASSERT(!AllOf(begin(arr2), end(arr2), even));
-  MOZ_RELEASE_ASSERT(AllOf(begin(arr2), end(arr2), odd));
-
-  int32_t arr3[3] = {2, 4, 6};
-  MOZ_RELEASE_ASSERT(AllOf(begin(arr3), end(arr3), even));
-  MOZ_RELEASE_ASSERT(!AllOf(begin(arr3), end(arr3), odd));
-}
-
-void TestConstExprAllOf()
-{
-  using namespace mozilla;
-  using namespace std;
-
-  constexpr int32_t arr1[3] = {1, 2, 3};
-  static_assert(!ConstExprAllOf(begin(arr1), end(arr1), even), "1-1");
-  static_assert(!ConstExprAllOf(begin(arr1), end(arr1), odd), "1-2");
-
-  constexpr int32_t arr2[3] = {1, 3, 5};
-  static_assert(!ConstExprAllOf(begin(arr2), end(arr2), even), "2-1");
-  static_assert(ConstExprAllOf(begin(arr2), end(arr2), odd), "2-2");
-
-  constexpr int32_t arr3[3] = {2, 4, 6};
-  static_assert(ConstExprAllOf(begin(arr3), end(arr3), even), "3-1");
-  static_assert(!ConstExprAllOf(begin(arr3), end(arr3), odd), "3-2");
-}
-
-int
-main()
-{
-  TestAllOf();
-  TestConstExprAllOf();
-  return 0;
-}
\ No newline at end of file

--- a/mfbt/tests/moz.build
+++ b/mfbt/tests/moz.build
@@ -5,17 +5,16 @@
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 if CONFIG['MOZ_WIDGET_TOOLKIT']:
     TEST_DIRS += [
         'gtest',
     ]
 
 CppUnitTests([
-    'TestAlgorithm',
     'TestArray',
     'TestArrayUtils',
     'TestAtomics',
     'TestBinarySearch',
     'TestBloomFilter',
     'TestBufferList',
     'TestCasting',
     'TestCeilingFloor',