Initial Firefox schemas, 2023Q1

interfaces/firefox/LICENSE.md

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+This source code is available under licenses which are both [free]
+and [open source].
+
+More specifically, most of the source code is available under the
+[Mozilla Public License 2.0][MPL].
+
+Additionally, parts of the schema files originated from Chromium
+source code:
+
+> Copyright (c) 2012 The Chromium Authors. All rights reserved.
+> Use of this source code is governed by a BSD-style license that can be
+> found in the [LICENSE][CHROMIUM] file.
+
+You are not granted rights or licenses to the trademarks of the
+Mozilla Foundation or any party, including without limitation the
+Firefox name or logo.
+
+For more information, see:
+http://www.mozilla.org/foundation/licensing.html
+
+[free]:         https://www.gnu.org/philosophy/free-sw.html
+[open source]:  https://www.opensource.org/docs/definition.php
+[CHROMIUM]:     schemas/LICENSE-CHROMIUM
+[MPL]:          schemas/LICENSE-MPL

interfaces/firefox/README.md

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+Thes directory contains a 2023Q1 snapshot of most JSON Schema files used
+in Firefox.
+
+It includes APIs that are already supported across browsers, and those we
+believe might be of interest to other browsers.  We omitted APIs which are
+considered internal to Firefox.
+
+The full and up to date list can always be found using this query from
+[mozilla-central](https://searchfox.org/mozilla-central/search?path=extensions/schemas).
+
+See [LICENSE](LICENSE.md) for copyright details.

interfaces/firefox/schemas/LICENSE-CHROMIUM

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+// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.