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

[tyoshino (SeeGerritForStatus), 2015/10/05 07:55:45]

Could you teach me which part of the ECMA spec I should read to learn how these
data property attributes are determined?

+    });
+});