Updating DOM metadata triage list for recent Blink changes.

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 d0703d1f42a629cd45f1bbb564f9fab8fc216b02..ef339ecf154bec82045c21c9d78190041efaac3b 100644
--- a/sdk/lib/web_gl/dart2js/web_gl_dart2js.dart
+++ b/sdk/lib/web_gl/dart2js/web_gl_dart2js.dart
@@ -762,7 +762,8 @@ class OesTextureFloat native "OESTextureFloat" {
 
 @DocsEditable
 @DomName('OESTextureFloatLinear')
-@Experimental // untriaged
+// http://www.khronos.org/registry/webgl/extensions/OES_texture_float_linear/
+@Experimental
 class OesTextureFloatLinear native "OESTextureFloatLinear" {
 }
 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
@@ -778,7 +779,6 @@ class OesTextureHalfFloat native "OESTextureHalfFloat" {
 
   @DomName('OESTextureHalfFloat.HALF_FLOAT_OES')
   @DocsEditable
-  @Experimental // untriaged
   static const int HALF_FLOAT_OES = 0x8D61;
 }
 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
@@ -788,7 +788,8 @@ class OesTextureHalfFloat native "OESTextureHalfFloat" {
 
 @DocsEditable
 @DomName('OESTextureHalfFloatLinear')
-@Experimental // untriaged
+// http://www.khronos.org/registry/webgl/extensions/OES_texture_half_float_linear/
+@Experimental
 class OesTextureHalfFloatLinear native "OESTextureHalfFloatLinear" {
 }
 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file