Implement author-constructible ReadableStream using V8 extras

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

Index: third_party/WebKit/Source/core/streams/CountQueuingStrategy.js
diff --git a/third_party/WebKit/Source/core/streams/ByteLengthQueuingStrategy.js b/third_party/WebKit/Source/core/streams/CountQueuingStrategy.js
similarity index 69%
copy from third_party/WebKit/Source/core/streams/ByteLengthQueuingStrategy.js
copy to third_party/WebKit/Source/core/streams/CountQueuingStrategy.js
index 5fdb7c99cb6be0b9c4a5d971c384ce8b81c6c486..500231e5844a42050485ad145df1b22de5c99984 100644
--- a/third_party/WebKit/Source/core/streams/ByteLengthQueuingStrategy.js
+++ b/third_party/WebKit/Source/core/streams/CountQueuingStrategy.js
@@ -3,7 +3,7 @@
 
   const defineProperty = global.Object.defineProperty;
 
-  class ByteLengthQueuingStrategy {
+  class CountQueuingStrategy {
     constructor(options) {
       defineProperty(this, 'highWaterMark', {
         value: options.highWaterMark,
@@ -12,11 +12,11 @@
         writable: true
       });
     }
-    size(chunk) { return chunk.byteLength; }
+    size(chunk) { return 1; }
   }
 
-  defineProperty(global, 'ByteLengthQueuingStrategy', {
-    value: ByteLengthQueuingStrategy,
+  defineProperty(global, 'CountQueuingStrategy', {
+    value: CountQueuingStrategy,
     enumerable: false,
     configurable: true,
     writable: true