Blink IDL roll.

sdk/lib/web_gl/dart2js/web_gl_dart2js.dart

Index: sdk/lib/web_gl/dart2js/web_gl_dart2js.dart
diff --git a/sdk/lib/web_gl/dart2js/web_gl_dart2js.dart b/sdk/lib/web_gl/dart2js/web_gl_dart2js.dart
index 91c3949b862e87f6e8fc55f8a55b28a91b29acf4..efa45f50fe81062f8d432622940ca27eff09d52d 100644
--- a/sdk/lib/web_gl/dart2js/web_gl_dart2js.dart
+++ b/sdk/lib/web_gl/dart2js/web_gl_dart2js.dart
@@ -676,6 +676,16 @@ class ExtDrawBuffers native "EXTDrawBuffers" {
 
 
 @DocsEditable
+@DomName('EXTFragDepth')
+@Experimental // untriaged
+class ExtFragDepth native "EXTFragDepth" {
+}
+// 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('EXTTextureFilterAnisotropic')
 // http://www.khronos.org/registry/webgl/extensions/EXT_texture_filter_anisotropic/
 @Experimental