1 files changed, 65 insertions, 0 deletions
diff --git a/image/decoders/icon/win/nsIconChannel.h b/image/decoders/icon/win/nsIconChannel.h
new file mode 100644
index 0000000000..4065be76e3
--- /dev/null
+++ b/image/decoders/icon/win/nsIconChannel.h
@@ -0,0 +1,65 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * 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_image_encoders_icon_win_nsIconChannel_h
+#define mozilla_image_encoders_icon_win_nsIconChannel_h
+
+#include "mozilla/Attributes.h"
+#include "mozilla/MozPromise.h"
+
+#include "nsCOMPtr.h"
+#include "nsString.h"
+#include "nsIChannel.h"
+#include "nsILoadGroup.h"
+#include "nsILoadInfo.h"
+#include "nsIInterfaceRequestor.h"
+#include "nsIInterfaceRequestorUtils.h"
+#include "nsIURI.h"
+#include "nsIInputStreamPump.h"
+#include "nsIStreamListener.h"
+
+namespace mozilla::ipc {
+class ByteBuf;
+}
+
+class nsIconChannel final : public nsIChannel, public nsIStreamListener {
+ public:
+  using ByteBufPromise =
+      mozilla::MozPromise<mozilla::ipc::ByteBuf, nsresult, true>;
+
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_NSIREQUEST
+  NS_DECL_NSICHANNEL
+  NS_DECL_NSIREQUESTOBSERVER
+  NS_DECL_NSISTREAMLISTENER
+
+  nsIconChannel();
+
+  nsresult Init(nsIURI* uri);
+
+  /// Obtains an icon in Windows ICO format as a ByteBuf instead
+  /// of a channel. For use with IPC.
+  static RefPtr<ByteBufPromise> GetIconAsync(nsIURI* aURI);
+
+ private:
+  ~nsIconChannel();
+
+  nsresult StartAsyncOpen();
+
+  nsCOMPtr<nsIURI> mUrl;
+  nsCOMPtr<nsIURI> mOriginalURI;
+  nsCOMPtr<nsILoadGroup> mLoadGroup;
+  nsCOMPtr<nsIInterfaceRequestor> mCallbacks;
+  nsCOMPtr<nsISupports> mOwner;
+  nsCOMPtr<nsILoadInfo> mLoadInfo;
+
+  nsCOMPtr<nsIInputStreamPump> mPump;
+  nsCOMPtr<nsIStreamListener> mListener;
+
+  bool mCanceled = false;
+};
+
+#endif  // mozilla_image_encoders_icon_win_nsIconChannel_h