Remove =List in JS, use JSExtendableArray instead.

sdk/lib/web_gl/dart2js/web_gl_dart2js.dart

Index: sdk/lib/web_gl/dart2js/web_gl_dart2js.dart
===================================================================
--- sdk/lib/web_gl/dart2js/web_gl_dart2js.dart	(revision 24212)
+++ sdk/lib/web_gl/dart2js/web_gl_dart2js.dart	(working copy)
@@ -7,7 +7,7 @@
 import 'dart:typed_data';
 import 'dart:_js_helper' show Creates, JSName, Null, Returns, convertDartClosureToJS;
 import 'dart:_foreign_helper' show JS;
-import 'dart:_interceptors' show Interceptor;
+import 'dart:_interceptors' show Interceptor, JSExtendableArray;
 // DO NOT EDIT - unless you are editing documentation as per:
 // https://code.google.com/p/dart/wiki/ContributingHTMLDocumentation
 // Auto-generated dart:web_gl library.
@@ -2320,8 +2320,8 @@
 
   @DomName('WebGLRenderingContext.getParameter')
   @DocsEditable
-  @Creates('Null|num|String|bool|=List|Float32List|Int32List|Uint32List|Framebuffer|Renderbuffer|Texture')
-  @Returns('Null|num|String|bool|=List|Float32List|Int32List|Uint32List|Framebuffer|Renderbuffer|Texture')
+  @Creates('Null|num|String|bool|JSExtendableArray|Float32List|Int32List|Uint32List|Framebuffer|Renderbuffer|Texture')
+  @Returns('Null|num|String|bool|JSExtendableArray|Float32List|Int32List|Uint32List|Framebuffer|Renderbuffer|Texture')
   Object getParameter(int pname) native;
 
   @DomName('WebGLRenderingContext.getProgramInfoLog')
@@ -2370,8 +2370,8 @@
 
   @DomName('WebGLRenderingContext.getUniform')
   @DocsEditable
-  @Creates('Null|num|String|bool|=List|Float32List|Int32List|Uint32List')
-  @Returns('Null|num|String|bool|=List|Float32List|Int32List|Uint32List')
+  @Creates('Null|num|String|bool|JSExtendableArray|Float32List|Int32List|Uint32List')
+  @Returns('Null|num|String|bool|JSExtendableArray|Float32List|Int32List|Uint32List')
   Object getUniform(Program program, UniformLocation location) native;
 
   @DomName('WebGLRenderingContext.getUniformLocation')