Implement ByteLengthQueuingStrategy

third_party/WebKit/Source/core/streams/ByteLengthQueuingStrategy.js

+(function(global, binding, v8) {
+  'use strict';
+
+  const defineProperty = global.Object.defineProperty;
+
+  class ByteLengthQueuingStrategy {
+    constructor(options) {
+      defineProperty(this, 'highWaterMark', {
+        value: options.highWaterMark,
+        enumerable: true,
+        configurable: true,
+        writable: true
+      });
+    }
+    size(chunk) { return chunk.byteLength; }
+  }
+
+  defineProperty(global, 'ByteLengthQueuingStrategy', {
+    value: ByteLengthQueuingStrategy,
+    enumerable: false,
+    configurable: true,
+    writable: true
+  });
+});