Make sure that classes in dart:html do not implement both List and List<E>.

sdk/lib/svg/dart2js/svg_dart2js.dart

Index: sdk/lib/svg/dart2js/svg_dart2js.dart
diff --git a/sdk/lib/svg/dart2js/svg_dart2js.dart b/sdk/lib/svg/dart2js/svg_dart2js.dart
index c837f1ff053977d54f61733529c5dfaf46ca713a..1d51c92c3cbdf4e0b44693e1a875e71b495743cd 100644
--- a/sdk/lib/svg/dart2js/svg_dart2js.dart
+++ b/sdk/lib/svg/dart2js/svg_dart2js.dart
@@ -3041,7 +3041,7 @@ class Length extends Interceptor native "SVGLength" {
 @DocsEditable()
 @DomName('SVGLengthList')
 @Unstable()
-class LengthList extends Interceptor with ListMixin<Length>, ImmutableListMixin<Length> implements List native "SVGLengthList" {
+class LengthList extends Interceptor with ListMixin<Length>, ImmutableListMixin<Length> implements List<Length> native "SVGLengthList" {
   // To suppress missing implicit constructor warnings.
   factory LengthList._() { throw new UnsupportedError("Not supported"); }
 
@@ -3495,7 +3495,7 @@ class Number extends Interceptor native "SVGNumber" {
 @DocsEditable()
 @DomName('SVGNumberList')
 @Unstable()
-class NumberList extends Interceptor with ListMixin<Number>, ImmutableListMixin<Number> implements List native "SVGNumberList" {
+class NumberList extends Interceptor with ListMixin<Number>, ImmutableListMixin<Number> implements List<Number> native "SVGNumberList" {
   // To suppress missing implicit constructor warnings.
   factory NumberList._() { throw new UnsupportedError("Not supported"); }
 
@@ -4260,7 +4260,7 @@ class PathSegLinetoVerticalRel extends PathSeg native "SVGPathSegLinetoVerticalR
 @DocsEditable()
 @DomName('SVGPathSegList')
 @Unstable()
-class PathSegList extends Interceptor with ListMixin<PathSeg>, ImmutableListMixin<PathSeg> implements List native "SVGPathSegList" {
+class PathSegList extends Interceptor with ListMixin<PathSeg>, ImmutableListMixin<PathSeg> implements List<PathSeg> native "SVGPathSegList" {
   // To suppress missing implicit constructor warnings.
   factory PathSegList._() { throw new UnsupportedError("Not supported"); }
 
@@ -4951,7 +4951,7 @@ class StopElement extends SvgElement native "SVGStopElement" {
 @DocsEditable()
 @DomName('SVGStringList')
 @Unstable()
-class StringList extends Interceptor with ListMixin<String>, ImmutableListMixin<String> implements List native "SVGStringList" {
+class StringList extends Interceptor with ListMixin<String>, ImmutableListMixin<String> implements List<String> native "SVGStringList" {
   // To suppress missing implicit constructor warnings.
   factory StringList._() { throw new UnsupportedError("Not supported"); }
 
@@ -5906,7 +5906,7 @@ class Transform extends Interceptor native "SVGTransform" {
 @DocsEditable()
 @DomName('SVGTransformList')
 @Unstable()
-class TransformList extends Interceptor with ListMixin<Transform>, ImmutableListMixin<Transform> implements List native "SVGTransformList" {
+class TransformList extends Interceptor with ListMixin<Transform>, ImmutableListMixin<Transform> implements List<Transform> native "SVGTransformList" {
   // To suppress missing implicit constructor warnings.
   factory TransformList._() { throw new UnsupportedError("Not supported"); }
 
@@ -6278,7 +6278,7 @@ class ZoomEvent extends UIEvent native "SVGZoomEvent" {
 @DocsEditable()
 @DomName('SVGElementInstanceList')
 @Unstable()
-class _ElementInstanceList extends Interceptor with ListMixin<ElementInstance>, ImmutableListMixin<ElementInstance> implements List native "SVGElementInstanceList" {
+class _ElementInstanceList extends Interceptor with ListMixin<ElementInstance>, ImmutableListMixin<ElementInstance> implements List<ElementInstance> native "SVGElementInstanceList" {
   // To suppress missing implicit constructor warnings.
   factory _ElementInstanceList._() { throw new UnsupportedError("Not supported"); }