Attempting to remove ArrayBufferView.buffer penalty.

sdk/lib/html/dart2js/html_dart2js.dart

Index: sdk/lib/html/dart2js/html_dart2js.dart
diff --git a/sdk/lib/html/dart2js/html_dart2js.dart b/sdk/lib/html/dart2js/html_dart2js.dart
index 2a3259de02e49e0920ad80cc1b36f0c9a010c302..cc559ea315716c1da91f05c9f0ebf44e86732b90 100644
--- a/sdk/lib/html/dart2js/html_dart2js.dart
+++ b/sdk/lib/html/dart2js/html_dart2js.dart
@@ -462,6 +462,8 @@ class ArrayBufferView native "*ArrayBufferView" {
 
   @DomName('ArrayBufferView.buffer')
   @DocsEditable
+  @Creates('ArrayBuffer')
+  @Returns('ArrayBuffer|Null')
   final dynamic buffer;
 
   @DomName('ArrayBufferView.byteLength')
@@ -1799,6 +1801,8 @@ class Crypto native "*Crypto" {
 
   @DomName('Crypto.getRandomValues')
   @DocsEditable
+  @Creates('ArrayBufferView')
+  @Returns('ArrayBufferView|Null')
   dynamic getRandomValues(/*ArrayBufferView*/ array) native;
 }
 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
@@ -11103,6 +11107,8 @@ class FileReaderSync native "*FileReaderSync" {
 
   @DomName('FileReaderSync.readAsArrayBuffer')
   @DocsEditable
+  @Creates('ArrayBuffer')
+  @Returns('ArrayBuffer|Null')
   dynamic readAsArrayBuffer(Blob blob) native;
 
   @DomName('FileReaderSync.readAsBinaryString')