1 files changed, 4 insertions, 6 deletions

diff --git a/ext/js/background/backend.js b/ext/js/background/backend.js
index f3568694..a2a93375 100644
--- a/ext/js/background/backend.js
+++ b/ext/js/background/backend.js
@@ -47,13 +47,11 @@ class Backend {
         });
         this._anki = new AnkiConnect();
         this._mecab = new Mecab();
-        this._mediaUtil = new MediaUtil();
         this._clipboardReader = new ClipboardReader({
             // eslint-disable-next-line no-undef
             document: (typeof document === 'object' && document !== null ? document : null),
             pasteTargetSelector: '#clipboard-paste-target',
-            imagePasteTargetSelector: '#clipboard-image-paste-target',
-            mediaUtil: this._mediaUtil
+            imagePasteTargetSelector: '#clipboard-image-paste-target'
         });
         this._clipboardMonitor = new ClipboardMonitor({
             japaneseUtil: this._japaneseUtil,
@@ -1750,7 +1748,7 @@ class Backend {
             return null;
         }
 
-        let extension = this._mediaUtil.getFileExtensionFromAudioMediaType(contentType);
+        let extension = MediaUtil.getFileExtensionFromAudioMediaType(contentType);
         if (extension === null) { extension = '.mp3'; }
         let fileName = this._generateAnkiNoteMediaFileName('yomichan_audio', extension, timestamp, definitionDetails);
         fileName = fileName.replace(/\]/g, '');
@@ -1764,7 +1762,7 @@ class Backend {
         const dataUrl = await this._getScreenshot(tabId, frameId, format, quality);
 
         const {mediaType, data} = this._getDataUrlInfo(dataUrl);
-        const extension = this._mediaUtil.getFileExtensionFromImageMediaType(mediaType);
+        const extension = MediaUtil.getFileExtensionFromImageMediaType(mediaType);
         if (extension === null) {
             throw new Error('Unknown media type for screenshot image');
         }
@@ -1782,7 +1780,7 @@ class Backend {
         }
 
         const {mediaType, data} = this._getDataUrlInfo(dataUrl);
-        const extension = this._mediaUtil.getFileExtensionFromImageMediaType(mediaType);
+        const extension = MediaUtil.getFileExtensionFromImageMediaType(mediaType);
         if (extension === null) {
             throw new Error('Unknown media type for clipboard image');
         }