From 985bd5675a54c7150c89b6357ec01bd2c98884af Mon Sep 17 00:00:00 2001
From: Noemi Erli <nerli@mozilla.com>
Date: Tue, 12 Nov 2019 20:08:09 +0200
Subject: [PATCH] Backed out changeset 9b131da7e0cc (bug 1595750) for causing
 Windows build bustages CLOSED TREE

---
 xpcom/ds/nsTArray.h              | 24 ------------------------
 xpcom/tests/gtest/TestTArray.cpp | 11 -----------
 2 files changed, 35 deletions(-)

diff --git a/xpcom/ds/nsTArray.h b/xpcom/ds/nsTArray.h
index c473df6574ed..4a35ff4a5071 100644
--- a/xpcom/ds/nsTArray.h
+++ b/xpcom/ds/nsTArray.h
@@ -2730,30 +2730,6 @@ Span<const ElementType> MakeSpan(
   return aTArray;
 }
 
-template <typename T>
-class nsTArrayBackInserter
-    : public std::iterator<std::output_iterator_tag, void, void, void, void> {
-  nsTArray<T>& mArray;
-
- public:
-  explicit nsTArrayBackInserter(nsTArray<T>& aArray) : mArray{aArray} {}
-
-  template <typename O>
-  nsTArrayBackInserter& operator=(O&& aValue) {
-    mArray.EmplaceBack(std::forward<O>(aValue));
-    return *this;
-  }
-
-  nsTArrayBackInserter& operator*() { return *this; }
-
-  void operator++() {}
-};
-
-template <typename T>
-auto MakeBackInserter(nsTArray<T>& aArray) {
-  return nsTArrayBackInserter<T>{aArray};
-}
-
 }  // namespace mozilla
 
 // MOZ_DBG support
diff --git a/xpcom/tests/gtest/TestTArray.cpp b/xpcom/tests/gtest/TestTArray.cpp
index 8702b1e3237e..7b6d891d28cd 100644
--- a/xpcom/tests/gtest/TestTArray.cpp
+++ b/xpcom/tests/gtest/TestTArray.cpp
@@ -443,15 +443,4 @@ TEST(TArray, RemoveElementsAt_ByIterator)
   ASSERT_EQ(expected, array);
 }
 
-TEST(TArray, MakeBackInserter)
-{
-  const std::vector<int> src{1, 2, 3, 4};
-  nsTArray<int> dst;
-
-  std::copy(src.begin(), src.end(), MakeBackInserter(dst));
-
-  const nsTArray<int> expected{1, 2, 3, 4};
-  ASSERT_EQ(expected, dst);
-}
-
 }  // namespace TestTArray