[adapters] 增加小游戏适配部分源码

adapters/platforms/baidu/wrapper/builtin/HTMLMediaElement.js

@@ -0,0 +1,20 @@
+/* eslint-disable */
+import HTMLElement from './HTMLElement'
+
+export default class HTMLMediaElement extends HTMLElement {
+    constructor(tagName) {
+        super(tagName)
+    }
+
+    addTextTrack() {}
+
+    captureStream() {}
+
+    fastSeek() {}
+
+    load() {}
+
+    pause() {}
+
+    play() {}
+}