Adding supported checks for WebGL

tests/html/html.status

 # 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.
 
 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 ]
 *layout_test: Skip
 
 [ $runtime == chrome ]
 element_types_test/supported_content: Fail
 element_types_test/supported_shadow: Fail
 input_element_test/supported_date: Pass, Fail      # Chrome stable does not support this input type.
 input_element_test/supported_datetime: Fail
 input_element_test/supported_datetime-local: Fail
 input_element_test/supported_month: Fail
 input_element_test/supported_week: Fail
 speechrecognition_test/supported: Pass, Fail       # Chrome stable does not support it.
 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.
 
 [ $compiler == none && ($runtime == drt || $runtime == dartium) ]
 request_animation_frame_test: Skip   # drt hangs; requestAnimationFrame not implemented
 transferables_test: Pass, Fail # Issue 8026
 
 [ $compiler == none && ($runtime == drt || $runtime == dartium) && $system == windows]
 websql_test: Skip # Issue 4941: stderr contains a backtrace.
@@ skipping 43 matching lines @@
 native_gc_test: Fail, Pass # BUG(7774): Untriaged.
 notifications_test/supported: Fail
 serialized_script_value_test: Fail
 shadow_dom_test/supported: Fail
 speechrecognition_test/supported: Fail
 storage_test: Fail, Pass
 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
 xhr_cross_origin_test: Fail # TODO(efortuna): Issue 7875.
 xhr_test/supported_HttpRequestProgressEvent: Fail
 xsltprocessor_test/supported: Fail
 history_test/history: Pass, Fail # issue 8183
 
 [ $runtime == ie9 ]
 document_test/supports_cssCanvasContext: Fail
 element_test/click: Fail                # IE does not support firing this event.
 element_types_test/supported_content: Fail
 element_types_test/supported_datalist: Fail
 element_types_test/supported_details: Fail
 element_types_test/supported_keygen: Fail
 element_types_test/supported_meter: Fail
 element_types_test/supported_object: Fail
 element_types_test/supported_output: Fail
 element_types_test/supported_progress: Fail
 element_types_test/supported_shadow: Fail
 element_types_test/supported_track: Fail
 form_data_test: Fail # Issue 4793.
 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.
 #
 audiobuffersourcenode_test: Fail
 audiocontext_test: Fail
 blob_constructor_test: Fail
 cache_test/supported: Fail
 css_test/supported_CssMatrix: Fail
 css_test/supported_DomPoint: Fail
@@ skipping 63 matching lines @@
 input_element_test/supported_url: Fail
 input_element_test/supported_week: Fail, Crash
 media_stream_test/supported_media: Fail
 media_stream_test/supported_MediaStreamEvent: Fail
 media_stream_test/supported_MediaStreamTrackEvent: Fail
 notifications_test/supported: Fail # Issue: 7414
 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
 element_test/elements: Crash, Fail # Issue: 7414
 element_types_test/constructors: Fail
 fileapi_test/getDirectory: Fail # Issue: 7414
 fileapi_test/getFile: Pass, Fail # Issue: 7414
 fileapi_test/unsupported_throws: Fail # Issue: 7414
 input_element_test/constructors: Fail # Issue: 7414
 input_element_test/supported_tel: Pass, Fail # Issue: 7414
@@ skipping 104 matching lines @@
 
 [ $compiler == dart2js && ($runtime == drt || $runtime == ff) ]
 request_animation_frame_test: Skip # Async test hangs.
 
 [ $compiler == dart2js && ($runtime == drt || $runtime == chrome || $runtime == ff || $runtime == safari) ]
 isolates_test: Skip   # Timeout because leg does not support web workers.
 
 [ $compiler == dart2js && $runtime == ff ]
 inner_frame_test: Skip # Timeout
 svg_3_test: Skip # Timeout