视频播放列表更新，增加分享海报生成

gcanvas/context-webgl/Program.js

@@ -0,0 +1,21 @@
+import {getTransferedObjectUUID} from './classUtils';
+
+const name = 'WebGLProgram';
+
+function uuid(id) {
+    return getTransferedObjectUUID(name, id);
+}
+
+export default class WebGLProgram {
+    className = name;
+
+    constructor(id) {
+        this.id = id;
+    }
+
+    static uuid = uuid;
+
+    uuid() {
+        return uuid(this.id);
+    }
+}