| 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 7543c2a903227ee22ebb966eaef21fb1e617d5fd..09a63ec9446a394a3707bc460e809493f090f05e 100644 | 
| --- a/sdk/lib/svg/dart2js/svg_dart2js.dart | 
| +++ b/sdk/lib/svg/dart2js/svg_dart2js.dart | 
| @@ -3082,6 +3082,9 @@ class LengthList implements JavaScriptIndexingBehavior, List<Length> native "*SV | 
| Iterable map(f(Length element)) => | 
| IterableMixinWorkaround.mapList(this, f); | 
|  | 
| +  List mappedBy(f(Length element)) => | 
| +      IterableMixinWorkaround.mappedByList(this, f); | 
| + | 
| Iterable<Length> where(bool f(Length element)) => | 
| IterableMixinWorkaround.where(this, f); | 
|  | 
| @@ -3146,7 +3149,7 @@ class LengthList implements JavaScriptIndexingBehavior, List<Length> native "*SV | 
|  | 
| // clear() defined by IDL. | 
|  | 
| -  Iterable<Length> get reversed { | 
| +  List<Length> get reversed { | 
| return IterableMixinWorkaround.reversedList(this); | 
| } | 
|  | 
| @@ -3706,6 +3709,9 @@ class NumberList implements JavaScriptIndexingBehavior, List<Number> native "*SV | 
| Iterable map(f(Number element)) => | 
| IterableMixinWorkaround.mapList(this, f); | 
|  | 
| +  List mappedBy(f(Number element)) => | 
| +      IterableMixinWorkaround.mappedByList(this, f); | 
| + | 
| Iterable<Number> where(bool f(Number element)) => | 
| IterableMixinWorkaround.where(this, f); | 
|  | 
| @@ -3770,7 +3776,7 @@ class NumberList implements JavaScriptIndexingBehavior, List<Number> native "*SV | 
|  | 
| // clear() defined by IDL. | 
|  | 
| -  Iterable<Number> get reversed { | 
| +  List<Number> get reversed { | 
| return IterableMixinWorkaround.reversedList(this); | 
| } | 
|  | 
| @@ -4606,6 +4612,9 @@ class PathSegList implements JavaScriptIndexingBehavior, List<PathSeg> native "* | 
| Iterable map(f(PathSeg element)) => | 
| IterableMixinWorkaround.mapList(this, f); | 
|  | 
| +  List mappedBy(f(PathSeg element)) => | 
| +      IterableMixinWorkaround.mappedByList(this, f); | 
| + | 
| Iterable<PathSeg> where(bool f(PathSeg element)) => | 
| IterableMixinWorkaround.where(this, f); | 
|  | 
| @@ -4670,7 +4679,7 @@ class PathSegList implements JavaScriptIndexingBehavior, List<PathSeg> native "* | 
|  | 
| // clear() defined by IDL. | 
|  | 
| -  Iterable<PathSeg> get reversed { | 
| +  List<PathSeg> get reversed { | 
| return IterableMixinWorkaround.reversedList(this); | 
| } | 
|  | 
| @@ -5490,6 +5499,9 @@ class StringList implements JavaScriptIndexingBehavior, List<String> native "*SV | 
| Iterable map(f(String element)) => | 
| IterableMixinWorkaround.mapList(this, f); | 
|  | 
| +  List mappedBy(f(String element)) => | 
| +      IterableMixinWorkaround.mappedByList(this, f); | 
| + | 
| Iterable<String> where(bool f(String element)) => | 
| IterableMixinWorkaround.where(this, f); | 
|  | 
| @@ -5554,7 +5566,7 @@ class StringList implements JavaScriptIndexingBehavior, List<String> native "*SV | 
|  | 
| // clear() defined by IDL. | 
|  | 
| -  Iterable<String> get reversed { | 
| +  List<String> get reversed { | 
| return IterableMixinWorkaround.reversedList(this); | 
| } | 
|  | 
| @@ -6653,6 +6665,9 @@ class TransformList implements List<Transform>, JavaScriptIndexingBehavior nativ | 
| Iterable map(f(Transform element)) => | 
| IterableMixinWorkaround.mapList(this, f); | 
|  | 
| +  List mappedBy(f(Transform element)) => | 
| +      IterableMixinWorkaround.mappedByList(this, f); | 
| + | 
| Iterable<Transform> where(bool f(Transform element)) => | 
| IterableMixinWorkaround.where(this, f); | 
|  | 
| @@ -6717,7 +6732,7 @@ class TransformList implements List<Transform>, JavaScriptIndexingBehavior nativ | 
|  | 
| // clear() defined by IDL. | 
|  | 
| -  Iterable<Transform> get reversed { | 
| +  List<Transform> get reversed { | 
| return IterableMixinWorkaround.reversedList(this); | 
| } | 
|  | 
| @@ -7170,6 +7185,9 @@ class _ElementInstanceList implements JavaScriptIndexingBehavior, List<ElementIn | 
| Iterable map(f(ElementInstance element)) => | 
| IterableMixinWorkaround.mapList(this, f); | 
|  | 
| +  List mappedBy(f(ElementInstance element)) => | 
| +      IterableMixinWorkaround.mappedByList(this, f); | 
| + | 
| Iterable<ElementInstance> where(bool f(ElementInstance element)) => | 
| IterableMixinWorkaround.where(this, f); | 
|  | 
| @@ -7236,7 +7254,7 @@ class _ElementInstanceList implements JavaScriptIndexingBehavior, List<ElementIn | 
| throw new UnsupportedError("Cannot clear immutable List."); | 
| } | 
|  | 
| -  Iterable<ElementInstance> get reversed { | 
| +  List<ElementInstance> get reversed { | 
| return IterableMixinWorkaround.reversedList(this); | 
| } | 
|  | 
|  |