Adding supported checks for WebGL

tests/html/html.status

Index: tests/html/html.status
diff --git a/tests/html/html.status b/tests/html/html.status
index f2343783d2327c36ffbbfa57ad3369cf8804a950..7e7a0f0ff8885a5a1a08b58e07f733364c97a924 100644
--- a/tests/html/html.status
+++ b/tests/html/html.status
@@ -5,7 +5,6 @@
 window_open_test: Skip # http://dartbug.com/5151
 
 event_test: Skip  # Issue 1996
-webgl_1_test: Skip  # Issue 1495
 
 # Layout tests are only supported on DRT.
 [ $runtime == ie9 || $runtime == ie10 || $runtime == safari || $runtime == ff || $runtime == chrome || $runtime == opera ]
@@ -24,6 +23,9 @@ shadow_dom_test/supported: Fail
 speechrecognition_test/types: Pass, Fail
 touchevent_test/supported: Fail
 
+[$runtime == drt]
+webgl_1_test: Fail # Does not work on DRT
+
 [ $runtime == chrome || $runtime == drt]
 audiobuffersourcenode_test: Pass, Fail, Timeout # AudiobufferSourceNode is flaky on Chrome and Dartium - filed issue 8021 for the timeout.
 audiocontext_test: Pass, Timeout  # Issue 8021.
@@ -87,6 +89,7 @@ svgelement_test/additionalConstructors: Fail
 svgelement2_test: Fail
 svg_3_test: Fail
 touchevent_test/supported: Fail
+webgl_1_test/supported: Fail
 websql_test/supported: Fail
 websocket_test/websocket: Fail # TODO(efortuna): Issue 7875.
 window_open_test: Skip
@@ -113,6 +116,7 @@ form_element_test: Fail # Issue 4793.
 inner_frame_test: Skip # Issue 5727 (timeout)
 typed_arrays_1_test/supported: Fail
 localstorage_test: Fail
+webgl_1_test/supported: Fail
 websql_test/supported: Fail
 #
 # Investigate and triage the following into bug reports.
@@ -196,6 +200,7 @@ performance_api_test/supported: Fail
 shadow_dom_test/supported: Fail
 speechrecognition_test/supported: Fail
 touchevent_test/supported: Fail
+webgl_1_test/supported: Fail
 
 audiocontext_test: Crash, Fail # Issue: 7414
 datalistelement_test: Fail # Issue: 7414