Updating DOM metadata triage list for recent Blink changes.

sdk/lib/web_gl/dartium/web_gl_dartium.dart

Index: sdk/lib/web_gl/dartium/web_gl_dartium.dart
diff --git a/sdk/lib/web_gl/dartium/web_gl_dartium.dart b/sdk/lib/web_gl/dartium/web_gl_dartium.dart
index c891bda9d6a0da03951be912a476b35180ff0ff6..c3e04e21dc4a1adb40b2eef59b56c4d078d03bdd 100644
--- a/sdk/lib/web_gl/dartium/web_gl_dartium.dart
+++ b/sdk/lib/web_gl/dartium/web_gl_dartium.dart
@@ -854,7 +854,8 @@ class OesTextureFloat extends NativeFieldWrapperClass1 {
 
 @DocsEditable
 @DomName('OESTextureFloatLinear')
-@Experimental // untriaged
+// http://www.khronos.org/registry/webgl/extensions/OES_texture_float_linear/
+@Experimental
 class OesTextureFloatLinear extends NativeFieldWrapperClass1 {
   OesTextureFloatLinear.internal();
 
@@ -875,7 +876,6 @@ class OesTextureHalfFloat extends NativeFieldWrapperClass1 {
 
   @DomName('OESTextureHalfFloat.HALF_FLOAT_OES')
   @DocsEditable
-  @Experimental // untriaged
   static const int HALF_FLOAT_OES = 0x8D61;
 
 }
@@ -888,7 +888,8 @@ class OesTextureHalfFloat extends NativeFieldWrapperClass1 {
 
 @DocsEditable
 @DomName('OESTextureHalfFloatLinear')
-@Experimental // untriaged
+// http://www.khronos.org/registry/webgl/extensions/OES_texture_half_float_linear/
+@Experimental
 class OesTextureHalfFloatLinear extends NativeFieldWrapperClass1 {
   OesTextureHalfFloatLinear.internal();