1 files changed, 53 insertions, 0 deletions
diff --git a/dom/file/StringBlobImpl.h b/dom/file/StringBlobImpl.h
new file mode 100644
index 0000000000..3b3037e693
--- /dev/null
+++ b/dom/file/StringBlobImpl.h
@@ -0,0 +1,53 @@
+/* -*- 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/. */
+
+#ifndef mozilla_dom_StringBlobImpl_h
+#define mozilla_dom_StringBlobImpl_h
+
+#include "BaseBlobImpl.h"
+#include "nsIMemoryReporter.h"
+
+namespace mozilla::dom {
+
+class StringBlobImpl final : public BaseBlobImpl, public nsIMemoryReporter {
+  MOZ_DEFINE_MALLOC_SIZE_OF(MallocSizeOf)
+
+ public:
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_NSIMEMORYREPORTER
+
+  static already_AddRefed<StringBlobImpl> Create(const nsACString& aData,
+                                                 const nsAString& aContentType);
+
+  void CreateInputStream(nsIInputStream** aStream,
+                         ErrorResult& aRv) const override;
+
+  already_AddRefed<BlobImpl> CreateSlice(uint64_t aStart, uint64_t aLength,
+                                         const nsAString& aContentType,
+                                         ErrorResult& aRv) const override;
+
+  size_t GetAllocationSize() const override { return mData.Length(); }
+
+  size_t GetAllocationSize(
+      FallibleTArray<BlobImpl*>& aVisitedBlobImpls) const override {
+    return GetAllocationSize();
+  }
+
+  void GetBlobImplType(nsAString& aBlobImplType) const override {
+    aBlobImplType = u"StringBlobImpl"_ns;
+  }
+
+ private:
+  StringBlobImpl(const nsACString& aData, const nsAString& aContentType);
+
+  ~StringBlobImpl() override;
+
+  nsCString mData;
+};
+
+}  // namespace mozilla::dom
+
+#endif  // mozilla_dom_StringBlobImpl_h