Also apply max-width to videos in webviews (microsoft#159500)

Author: mjbvz

extensions/markdown-language-features/media/markdown.css

@@ -113,7 +113,7 @@ ol ol {
 	margin-bottom: 0;
 }
 
-img {
+img, video {
 	max-width: 100%;
 	max-height: 100%;
 }

src/vs/workbench/contrib/webview/browser/pre/index-no-csp.html

@@ -99,7 +99,7 @@
 		padding: 0 20px;
 	}
 
-	img {
+	img, video {
 		max-width: 100%;
 		max-height: 100%;
 	}

src/vs/workbench/contrib/webview/browser/pre/index.html

@@ -5,7 +5,7 @@
 	<meta charset="UTF-8">
 
 	<meta http-equiv="Content-Security-Policy"
-		content="default-src 'none'; script-src 'sha256-JpX/ganPoxpavjxWCz9DUZgwVZ59o2lwSYTQrziPsdU=' 'self'; frame-src 'self'; style-src 'unsafe-inline';">
+		content="default-src 'none'; script-src 'sha256-EDTzzejMryXNJsvXPm3ha4m5Mi6h2Y//JRojh+K0+bY=' 'self'; frame-src 'self'; style-src 'unsafe-inline';">
 
 	<!-- Disable pinch zooming -->
 	<meta name="viewport"
@@ -100,7 +100,7 @@
 		padding: 0 20px;
 	}
 
-	img {
+	img, video {
 		max-width: 100%;
 		max-height: 100%;
 	}