Fixing some dart2js annotation issues in web_gl lib.

sdk/lib/web_gl/dart2js/web_gl_dart2js.dart

 library dart.dom.web_gl;
 
 import 'dart:collection';
 import 'dart:html';
 import 'dart:html_common';
-import 'dart:_js_helper' show Creates, Returns, convertDartClosureToJS;
+import 'dart:_js_helper' show Creates, JSName, Null, Returns, convertDartClosureToJS;
 import 'dart:_foreign_helper' show JS;
 // DO NOT EDIT - unless you are editing documentation as per:
 // https://code.google.com/p/dart/wiki/ContributingHTMLDocumentation
 // Auto-generated dart:web_gl library.
 
 
 
 
 
 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
@@ skipping 1524 matching lines @@
   @DomName('WebGLRenderingContext.getExtension')
   @DocsEditable
   Object getExtension(String name) native;
 
   @DomName('WebGLRenderingContext.getFramebufferAttachmentParameter')
   @DocsEditable
   Object getFramebufferAttachmentParameter(int target, int attachment, int pname) native;
 
   @DomName('WebGLRenderingContext.getParameter')
   @DocsEditable
-  @Creates('Null|num|String|bool|=List|Float32Array|Int32Array|Uint32Array|WebGLFramebuffer|WebGLRenderbuffer|WebGLTexture')
-  @Returns('Null|num|String|bool|=List|Float32Array|Int32Array|Uint32Array|WebGLFramebuffer|WebGLRenderbuffer|WebGLTexture')
+  @Creates('Null|num|String|bool|=List|Float32Array|Int32Array|Uint32Array|Framebuffer|Renderbuffer|Texture')
+  @Returns('Null|num|String|bool|=List|Float32Array|Int32Array|Uint32Array|Framebuffer|Renderbuffer|Texture')
   Object getParameter(int pname) native;
 
   @DomName('WebGLRenderingContext.getProgramInfoLog')
   @DocsEditable
   String getProgramInfoLog(Program program) native;
 
   @DomName('WebGLRenderingContext.getProgramParameter')
   @DocsEditable
   Object getProgramParameter(Program program, int pname) native;
 
@@ skipping 417 matching lines @@
 }
 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 
 @DocsEditable
 @DomName('WebGLVertexArrayObjectOES')
 class WebGLVertexArrayObject native "*WebGLVertexArrayObjectOES" {
 }