Add supported checks to the SVG library, and library cleanup.

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
 
 # Layout tests are only supported on DRT.
 [ $runtime == ie9 || $runtime == ie10 || $runtime == safari || $runtime == ff || $runtime == chrome || $runtime == opera ]
@@ skipping 68 matching lines @@
 media_stream_test/supported_MediaStreamTrackEvent: Fail
 messageevent_test: Fail
 microtask_test: Fail, Pass # Appears to be flaky
 mutationobserver_test/supported: Fail
 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
+svgelement_test/supported_altGlyph: Fail
+svgelement_test/supported_animate: Fail
+svgelement_test/supported_animateTransform: Fail
+svgelement_test/supported_animateMotion: Fail
+svgelement_test/supported_foreignObject: Fail
+svgelement_test/supported_set: 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
 
@@ skipping 48 matching lines @@
 media_stream_test/supported_media: Fail
 media_stream_test/supported_MediaStreamEvent: Fail
 media_stream_test/supported_MediaStreamTrackEvent: Fail
 messageevent_test: Fail
 mutationobserver_test/supported: Fail
 notifications_test/supported: Fail
 postmessage_structured_test: Skip   # BUG(5685): times out.
 serialized_script_value_test: Fail
 shadow_dom_test/supported: Fail
 speechrecognition_test/supported: Fail
-svg_3_test: Fail
-svgelement_test/additionalConstructors: Fail
-svgelement2_test: Fail
+svg_test/supported_externalResourcesRequired: Fail
+svgelement_test/supported_altGlyph: Fail
+svgelement_test/supported_animate: Fail
+svgelement_test/supported_animateTransform: Fail
+svgelement_test/supported_animateMotion: Fail
+svgelement_test/supported_feBlend: Fail
+svgelement_test/supported_feColorMatrix: Fail
+svgelement_test/supported_feComponentTransfer: Fail
+svgelement_test/supported_feConvolveMatrix: Fail
+svgelement_test/supported_feDiffuseLighting: Fail
+svgelement_test/supported_feDisplacementMap: Fail
+svgelement_test/supported_feDistantLight: Fail
+svgelement_test/supported_feFlood: Fail
+svgelement_test/supported_feFuncA: Fail
+svgelement_test/supported_feFuncB: Fail
+svgelement_test/supported_feFuncG: Fail
+svgelement_test/supported_feFuncR: Fail
+svgelement_test/supported_feGaussianBlur: Fail
+svgelement_test/supported_feImage: Fail
+svgelement_test/supported_feMerge: Fail
+svgelement_test/supported_feMergeNode: Fail
+svgelement_test/supported_feOffset: Fail
+svgelement_test/supported_fePointLight: Fail
+svgelement_test/supported_feSpecularLighting: Fail
+svgelement_test/supported_feSpotLight: Fail
+svgelement_test/supported_feTile: Fail
+svgelement_test/supported_feTurbulence: Fail
+svgelement_test/supported_filter: Fail
+svgelement_test/supported_foreignObject: Fail
+svgelement_test/supported_set: Fail
 touchevent_test/supported: Fail
 url_test: Fail              # IE9 does not support createObjectURL (it is supported in IE10)
 websocket_test/supported: Fail
 window_open_test: Skip      # BUG(4016)
 isolates_test: Skip         # BUG(4016)
 xhr_test: Skip              # BUG(4016)
 xhr_test/supported_HttpRequestProgressEvent: Fail
 xhr_cross_origin_test: Fail # Issue 6016.
 xsltprocessor_test/supported: Fail
 
@@ skipping 48 matching lines @@
 element_test/eventListening: Crash
 element_test/queryAll: Fail
 element_webkit_test: Fail
 htmlelement_test: Fail
 indexeddb_1_test/supported: Fail
 mutationobserver_test/supported: Fail
 notifications_test/supported: Fail
 performance_api_test/supported: Fail
 serialized_script_value_test: Fail
 speechrecognition_test/supported: Fail
-svg_3_test: Fail
-svgelement_test/additionalConstructors: Fail
-svgelement2_test: Fail
+svg_test/supported_externalResourcesRequired: Fail
+svg_test/supported_langSpace: Fail
 typed_arrays_arraybuffer_test: Fail
 url_test: Fail
 fileapi_test: Skip # Timeout.
 inner_frame_test: Skip # Timeout.
 js_interop_3_test: Skip # Timeout.
 js_interop_4_test: Skip # Timeout.
 isolates_test: Skip # Timeout.
 websql_test/supported: Fail
 
 [ $runtime == ff ]
@@ skipping 18 matching lines @@
 input_element_test/supported_month: Fail
 input_element_test/supported_time: Fail
 input_element_test/supported_week: Fail
 input_element_test/supported_number: Fail
 input_element_test/supported_range: Fail
 media_stream_test/supported_MediaStreamEvent: Fail
 media_stream_test/supported_MediaStreamTrackEvent: Fail
 notifications_test/supported: Fail
 shadow_dom_test/supported: Fail
 speechrecognition_test/supported: Fail
-# Interfaces not implemented: SVGTests, SVGLangSpace, SVGExternalResourcesRequired, SVGStylable
-svg_3_test: Fail
-svgelement_test/additionalConstructors: Fail
-svgelement2_test: Fail
+svg_test/supported_externalResourcesRequired: Fail
+svg_test/supported_langSpace: Fail
 touchevent_test/supported: Fail
 transferables_test: Fail   # Issue 3392.
 webgl_1_test: Pass, Fail   # Issue 8219
 websql_test/supported: Fail
 xhr_test/supported_HttpRequestProgressEvent: Fail
 
 [ $runtime == ie9 && ($system == linux || $system == macos) ]
 *: Skip
 
 [ $runtime == safari && ($system == linux || $system == windows) ]
 *: Skip
 
 # 'html' tests import the HTML library, so they only make sense in
 # a browser environment.
 [ $runtime == vm ]
 *: Skip
 
 [ $compiler == dart2js ]
 transferables_test: Skip # until isInstance works in dart2js
 
 [ $compiler == dart2js && ($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