Bug 1293666 - Add initializer_list ctor to AutoTArray. r=froydnj

MozReview-Commit-ID: 8ORBttWN2Rj

--HG--
extra : rebase_source : 9ad6ae8aff9cbc81c773297d0bb2f7478fb3516e

docshell/base/nsDocShell.cpp

@@ -4452,8 +4452,7 @@ nsDocShell::RemoveFromSessionHistory()
 
   int32_t index = 0;
   sessionHistory->GetIndex(&index);
-  AutoTArray<uint64_t, 16> ids;
-  ids.AppendElement(mHistoryID);
+  AutoTArray<uint64_t, 16> ids({mHistoryID});
   internalHistory->RemoveEntries(ids, index);
   return NS_OK;
 }

dom/base/File.cpp

@@ -255,8 +255,7 @@ Blob::ToFile()
 already_AddRefed<File>
 Blob::ToFile(const nsAString& aName, ErrorResult& aRv) const
 {
-  AutoTArray<RefPtr<BlobImpl>, 1> blobImpls;
-  blobImpls.AppendElement(mImpl);
+  AutoTArray<RefPtr<BlobImpl>, 1> blobImpls({mImpl});
 
   nsAutoString contentType;
   mImpl->GetType(contentType);

xpcom/glue/nsTArray.h

@@ -2216,6 +2216,12 @@ public:
     this->SwapElements(aOther);
   }
 
+  MOZ_IMPLICIT AutoTArray(std::initializer_list<E> aIL)
+  {
+    Init();
+    this->AppendElements(aIL.begin(), aIL.size());
+  }
+
   self_type& operator=(const self_type& aOther)
   {
     base_type::operator=(aOther);