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+---
+title: tabs.MutedInfoReason
+slug: Mozilla/Add-ons/WebExtensions/API/tabs/MutedInfoReason
+translation_of: Mozilla/Add-ons/WebExtensions/API/tabs/MutedInfoReason
+---
+<div>{{AddonSidebar()}}</div>
+
+<p>タブがミュート・アンミュートになった理由を指定します。</p>
+
+<h2 id="型">型</h2>
+
+<p>値のタイプは文字列型です。可能な値:</p>
+
+<dl>
+ <dt>"capture"</dt>
+ <dd>タブのキャプチャが開始され、ミュート状態に強いられました。</dd>
+ <dt>"extension"</dt>
+ <dd>拡張機能がミュート状態に設定しました。もしこれが理由なら、{{WebExtAPIRef("tabs.mutedInfo")}}の<code>extensionId</code>が責任のある拡張機能のIDを含んでいます。</dd>
+ <dt>"user"</dt>
+ <dd>ユーザがミュート状態に設定しました。</dd>
+</dl>
+
+<h2 id="ブラウザ互換性">ブラウザ互換性</h2>
+
+
+
+<p>{{Compat("webextensions.api.tabs.MutedInfoReason")}}</p>
+
+<p>{{WebExtExamples}}</p>
+
+<div class="note"><strong>謝辞</strong>
+
+<p>このAPIはChromiumの<a href="https://developer.chrome.com/extensions/tabs#type-MutedInfoReason"><code>chrome.tabs</code></a> APIに基づいています。このドキュメントはChromiumコードの<a href="https://chromium.googlesource.com/chromium/src/+/master/chrome/common/extensions/api/tabs.json"><code>tabs.json</code></a>から派生したものです。</p>
+
+<p>Microsoft Edgeの互換性データはMicrosoft Corporationから提供されており、Creative Commons Attribution 3.0 United States Licenseのもとにここに含まれています。</p>
+</div>
+
+<div class="hidden">
+<pre>// Copyright 2015 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.
+</pre>
+</div>