Improved security of Quick View by rendering videos and audios inside webview.

ui/file_manager/file_manager/foreground/elements/files_quick_view.css

Index: ui/file_manager/file_manager/foreground/elements/files_quick_view.css
diff --git a/ui/file_manager/file_manager/foreground/elements/files_quick_view.css b/ui/file_manager/file_manager/foreground/elements/files_quick_view.css
index 04ab61bdcdc1b94044655e04cffd570b3b94b236..616c922d0485fee0badea50c3556bc0f0cb47946 100644
--- a/ui/file_manager/file_manager/foreground/elements/files_quick_view.css
+++ b/ui/file_manager/file_manager/foreground/elements/files_quick_view.css
@@ -21,10 +21,6 @@ paper-dialog {
   width: 100%;
 }
 
-video {
-  min-width: 192px;
-}
-
 #video-poster {
   max-height: 100%;
   max-width: 100%;
@@ -34,12 +30,6 @@ paper-button:focus:not(:active) {
   box-shadow: 0 0 0 2px rgba(191, 191, 191, 0.5);
 }
 
-video::-webkit-media-controls-fullscreen-button,
-audio::-webkit-media-controls-volume-slider,
-video::-webkit-media-controls-volume-slider {
-  display: none;
-}
-
 #audio-artwork {
   height: 300px;
   margin: 0 auto;