Recommit changing List.skip/take/revert returns Iterable and remove mappedBy.

sdk/lib/html/dart2js/html_dart2js.dart

Index: sdk/lib/html/dart2js/html_dart2js.dart
diff --git a/sdk/lib/html/dart2js/html_dart2js.dart b/sdk/lib/html/dart2js/html_dart2js.dart
index 42a98f1cd538ec7335870f6c8d73fd966c777bbb..3420affd1729955dc47c8fde07e18577435960df 100644
--- a/sdk/lib/html/dart2js/html_dart2js.dart
+++ b/sdk/lib/html/dart2js/html_dart2js.dart
@@ -7197,9 +7197,6 @@ class DomMimeTypeArray implements JavaScriptIndexingBehavior, List<DomMimeType>
   Iterable map(f(DomMimeType element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(DomMimeType element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<DomMimeType> where(bool f(DomMimeType element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -7266,7 +7263,7 @@ class DomMimeTypeArray implements JavaScriptIndexingBehavior, List<DomMimeType>
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<DomMimeType> get reversed {
+  Iterable<DomMimeType> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -7454,9 +7451,6 @@ class DomPluginArray implements JavaScriptIndexingBehavior, List<DomPlugin> nati
   Iterable map(f(DomPlugin element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(DomPlugin element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<DomPlugin> where(bool f(DomPlugin element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -7523,7 +7517,7 @@ class DomPluginArray implements JavaScriptIndexingBehavior, List<DomPlugin> nati
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<DomPlugin> get reversed {
+  Iterable<DomPlugin> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -7818,9 +7812,6 @@ class DomStringList implements JavaScriptIndexingBehavior, List<String> native "
   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);
 
@@ -7887,7 +7878,7 @@ class DomStringList implements JavaScriptIndexingBehavior, List<String> native "
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<String> get reversed {
+  Iterable<String> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -8081,10 +8072,6 @@ class _ChildrenElementList implements List {
     return IterableMixinWorkaround.mapList(this, f);
   }
 
-  List mappedBy(f(Element element)) {
-    return IterableMixinWorkaround.mappedByList(this, f);
-  }
-
   Iterable<Element> where(bool f(Element element)) {
     return IterableMixinWorkaround.where(this, f);
   }
@@ -8165,7 +8152,7 @@ class _ChildrenElementList implements List {
     }
   }
 
-  List<Element> get reversed {
+  Iterable<Element> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -8306,10 +8293,6 @@ class _FrozenElementList implements List {
     return IterableMixinWorkaround.mapList(this, f);
   }
 
-  List mappedBy(f(Element element)) {
-    return IterableMixinWorkaround.mappedByList(this, f);
-  }
-
   Iterable<Element> where(bool f(Element element)) {
     return IterableMixinWorkaround.where(this, f);
   }
@@ -8399,7 +8382,7 @@ class _FrozenElementList implements List {
     throw new UnsupportedError('');
   }
 
-  List<Element> get reversed {
+  Iterable<Element> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -10660,9 +10643,6 @@ class FileList implements JavaScriptIndexingBehavior, List<File> native "*FileLi
   Iterable map(f(File element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(File element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<File> where(bool f(File element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -10729,7 +10709,7 @@ class FileList implements JavaScriptIndexingBehavior, List<File> native "*FileLi
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<File> get reversed {
+  Iterable<File> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -11220,9 +11200,6 @@ class Float32Array extends ArrayBufferView implements JavaScriptIndexingBehavior
   Iterable map(f(num element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(num element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<num> where(bool f(num element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -11289,7 +11266,7 @@ class Float32Array extends ArrayBufferView implements JavaScriptIndexingBehavior
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<num> get reversed {
+  Iterable<num> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -11439,9 +11416,6 @@ class Float64Array extends ArrayBufferView implements JavaScriptIndexingBehavior
   Iterable map(f(num element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(num element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<num> where(bool f(num element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -11508,7 +11482,7 @@ class Float64Array extends ArrayBufferView implements JavaScriptIndexingBehavior
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<num> get reversed {
+  Iterable<num> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -11967,9 +11941,6 @@ class HtmlAllCollection implements JavaScriptIndexingBehavior, List<Node> native
   Iterable map(f(Node element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(Node element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<Node> where(bool f(Node element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -12036,7 +12007,7 @@ class HtmlAllCollection implements JavaScriptIndexingBehavior, List<Node> native
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<Node> get reversed {
+  Iterable<Node> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -12177,9 +12148,6 @@ class HtmlCollection implements JavaScriptIndexingBehavior, List<Node> native "*
   Iterable map(f(Node element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(Node element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<Node> where(bool f(Node element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -12246,7 +12214,7 @@ class HtmlCollection implements JavaScriptIndexingBehavior, List<Node> native "*
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<Node> get reversed {
+  Iterable<Node> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -14199,9 +14167,6 @@ class Int16Array extends ArrayBufferView implements JavaScriptIndexingBehavior,
   Iterable map(f(int element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(int element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<int> where(bool f(int element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -14268,7 +14233,7 @@ class Int16Array extends ArrayBufferView implements JavaScriptIndexingBehavior,
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<int> get reversed {
+  Iterable<int> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -14418,9 +14383,6 @@ class Int32Array extends ArrayBufferView implements JavaScriptIndexingBehavior,
   Iterable map(f(int element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(int element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<int> where(bool f(int element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -14487,7 +14449,7 @@ class Int32Array extends ArrayBufferView implements JavaScriptIndexingBehavior,
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<int> get reversed {
+  Iterable<int> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -14637,9 +14599,6 @@ class Int8Array extends ArrayBufferView implements JavaScriptIndexingBehavior, L
   Iterable map(f(int element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(int element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<int> where(bool f(int element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -14706,7 +14665,7 @@ class Int8Array extends ArrayBufferView implements JavaScriptIndexingBehavior, L
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<int> get reversed {
+  Iterable<int> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -17143,10 +17102,6 @@ class _ChildNodeListLazy implements List {
     return IterableMixinWorkaround.mapList(this, f);
   }
 
-  List mappedBy(f(Node element)) {
-    return IterableMixinWorkaround.mappedByList(this, f);
-  }
-
   Iterable<Node> where(bool f(Node element)) {
     return IterableMixinWorkaround.where(this, f);
   }
@@ -17198,7 +17153,7 @@ class _ChildNodeListLazy implements List {
     return this[index];
   }
 
-  List<Node> get reversed {
+  Iterable<Node> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -17538,9 +17493,6 @@ class NodeList implements JavaScriptIndexingBehavior, List<Node> native "*NodeLi
   Iterable map(f(Node element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(Node element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<Node> where(bool f(Node element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -17607,7 +17559,7 @@ class NodeList implements JavaScriptIndexingBehavior, List<Node> native "*NodeLi
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<Node> get reversed {
+  Iterable<Node> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -19856,9 +19808,6 @@ class SourceBufferList extends EventTarget implements JavaScriptIndexingBehavior
   Iterable map(f(SourceBuffer element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(SourceBuffer element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<SourceBuffer> where(bool f(SourceBuffer element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -19925,7 +19874,7 @@ class SourceBufferList extends EventTarget implements JavaScriptIndexingBehavior
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<SourceBuffer> get reversed {
+  Iterable<SourceBuffer> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -20139,9 +20088,6 @@ class SpeechGrammarList implements JavaScriptIndexingBehavior, List<SpeechGramma
   Iterable map(f(SpeechGrammar element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(SpeechGrammar element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<SpeechGrammar> where(bool f(SpeechGrammar element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -20208,7 +20154,7 @@ class SpeechGrammarList implements JavaScriptIndexingBehavior, List<SpeechGramma
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<SpeechGrammar> get reversed {
+  Iterable<SpeechGrammar> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -20710,9 +20656,6 @@ class SqlResultSetRowList implements JavaScriptIndexingBehavior, List<Map> nativ
   Iterable map(f(Map element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(Map element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<Map> where(bool f(Map element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -20779,7 +20722,7 @@ class SqlResultSetRowList implements JavaScriptIndexingBehavior, List<Map> nativ
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<Map> get reversed {
+  Iterable<Map> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -21796,9 +21739,6 @@ class TextTrackCueList implements List<TextTrackCue>, JavaScriptIndexingBehavior
   Iterable map(f(TextTrackCue element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(TextTrackCue element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<TextTrackCue> where(bool f(TextTrackCue element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -21865,7 +21805,7 @@ class TextTrackCueList implements List<TextTrackCue>, JavaScriptIndexingBehavior
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<TextTrackCue> get reversed {
+  Iterable<TextTrackCue> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -22004,9 +21944,6 @@ class TextTrackList extends EventTarget implements JavaScriptIndexingBehavior, L
   Iterable map(f(TextTrack element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(TextTrack element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<TextTrack> where(bool f(TextTrack element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -22073,7 +22010,7 @@ class TextTrackList extends EventTarget implements JavaScriptIndexingBehavior, L
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<TextTrack> get reversed {
+  Iterable<TextTrack> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -22419,9 +22356,6 @@ class TouchList implements JavaScriptIndexingBehavior, List<Touch> native "*Touc
   Iterable map(f(Touch element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(Touch element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<Touch> where(bool f(Touch element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -22488,7 +22422,7 @@ class TouchList implements JavaScriptIndexingBehavior, List<Touch> native "*Touc
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<Touch> get reversed {
+  Iterable<Touch> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -22868,9 +22802,6 @@ class Uint16Array extends ArrayBufferView implements JavaScriptIndexingBehavior,
   Iterable map(f(int element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(int element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<int> where(bool f(int element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -22937,7 +22868,7 @@ class Uint16Array extends ArrayBufferView implements JavaScriptIndexingBehavior,
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<int> get reversed {
+  Iterable<int> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -23087,9 +23018,6 @@ class Uint32Array extends ArrayBufferView implements JavaScriptIndexingBehavior,
   Iterable map(f(int element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(int element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<int> where(bool f(int element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -23156,7 +23084,7 @@ class Uint32Array extends ArrayBufferView implements JavaScriptIndexingBehavior,
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<int> get reversed {
+  Iterable<int> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -23306,9 +23234,6 @@ class Uint8Array extends ArrayBufferView implements JavaScriptIndexingBehavior,
   Iterable map(f(int element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(int element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<int> where(bool f(int element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -23375,7 +23300,7 @@ class Uint8Array extends ArrayBufferView implements JavaScriptIndexingBehavior,
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<int> get reversed {
+  Iterable<int> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -23522,9 +23447,6 @@ class Uint8ClampedArray extends Uint8Array implements JavaScriptIndexingBehavior
   Iterable map(f(int element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(int element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<int> where(bool f(int element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -23591,7 +23513,7 @@ class Uint8ClampedArray extends Uint8Array implements JavaScriptIndexingBehavior
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<int> get reversed {
+  Iterable<int> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -27241,9 +27163,6 @@ class _ClientRectList implements JavaScriptIndexingBehavior, List<ClientRect> na
   Iterable map(f(ClientRect element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(ClientRect element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<ClientRect> where(bool f(ClientRect element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -27310,7 +27229,7 @@ class _ClientRectList implements JavaScriptIndexingBehavior, List<ClientRect> na
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<ClientRect> get reversed {
+  Iterable<ClientRect> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -27441,9 +27360,6 @@ class _CssRuleList implements JavaScriptIndexingBehavior, List<CssRule> native "
   Iterable map(f(CssRule element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(CssRule element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<CssRule> where(bool f(CssRule element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -27510,7 +27426,7 @@ class _CssRuleList implements JavaScriptIndexingBehavior, List<CssRule> native "
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<CssRule> get reversed {
+  Iterable<CssRule> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -27641,9 +27557,6 @@ class _CssValueList extends CssValue implements List<CssValue>, JavaScriptIndexi
   Iterable map(f(CssValue element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(CssValue element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<CssValue> where(bool f(CssValue element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -27710,7 +27623,7 @@ class _CssValueList extends CssValue implements List<CssValue>, JavaScriptIndexi
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<CssValue> get reversed {
+  Iterable<CssValue> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -27841,9 +27754,6 @@ class _EntryArray implements JavaScriptIndexingBehavior, List<Entry> native "*En
   Iterable map(f(Entry element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(Entry element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<Entry> where(bool f(Entry element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -27910,7 +27820,7 @@ class _EntryArray implements JavaScriptIndexingBehavior, List<Entry> native "*En
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<Entry> get reversed {
+  Iterable<Entry> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -28041,9 +27951,6 @@ class _EntryArraySync implements JavaScriptIndexingBehavior, List<EntrySync> nat
   Iterable map(f(EntrySync element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(EntrySync element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<EntrySync> where(bool f(EntrySync element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -28110,7 +28017,7 @@ class _EntryArraySync implements JavaScriptIndexingBehavior, List<EntrySync> nat
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<EntrySync> get reversed {
+  Iterable<EntrySync> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -28241,9 +28148,6 @@ class _GamepadList implements JavaScriptIndexingBehavior, List<Gamepad> native "
   Iterable map(f(Gamepad element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(Gamepad element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<Gamepad> where(bool f(Gamepad element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -28310,7 +28214,7 @@ class _GamepadList implements JavaScriptIndexingBehavior, List<Gamepad> native "
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<Gamepad> get reversed {
+  Iterable<Gamepad> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -28504,9 +28408,6 @@ class _MediaStreamList implements JavaScriptIndexingBehavior, List<MediaStream>
   Iterable map(f(MediaStream element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(MediaStream element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<MediaStream> where(bool f(MediaStream element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -28573,7 +28474,7 @@ class _MediaStreamList implements JavaScriptIndexingBehavior, List<MediaStream>
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<MediaStream> get reversed {
+  Iterable<MediaStream> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -28704,9 +28605,6 @@ class _NamedNodeMap implements JavaScriptIndexingBehavior, List<Node> native "*N
   Iterable map(f(Node element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(Node element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<Node> where(bool f(Node element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -28773,7 +28671,7 @@ class _NamedNodeMap implements JavaScriptIndexingBehavior, List<Node> native "*N
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<Node> get reversed {
+  Iterable<Node> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -28928,9 +28826,6 @@ class _SpeechInputResultList implements JavaScriptIndexingBehavior, List<SpeechI
   Iterable map(f(SpeechInputResult element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(SpeechInputResult element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<SpeechInputResult> where(bool f(SpeechInputResult element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -28997,7 +28892,7 @@ class _SpeechInputResultList implements JavaScriptIndexingBehavior, List<SpeechI
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<SpeechInputResult> get reversed {
+  Iterable<SpeechInputResult> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -29128,9 +29023,6 @@ class _SpeechRecognitionResultList implements JavaScriptIndexingBehavior, List<S
   Iterable map(f(SpeechRecognitionResult element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(SpeechRecognitionResult element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<SpeechRecognitionResult> where(bool f(SpeechRecognitionResult element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -29197,7 +29089,7 @@ class _SpeechRecognitionResultList implements JavaScriptIndexingBehavior, List<S
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<SpeechRecognitionResult> get reversed {
+  Iterable<SpeechRecognitionResult> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -29328,9 +29220,6 @@ class _StyleSheetList implements JavaScriptIndexingBehavior, List<StyleSheet> na
   Iterable map(f(StyleSheet element)) =>
       IterableMixinWorkaround.mapList(this, f);
 
-  List mappedBy(f(StyleSheet element)) =>
-      IterableMixinWorkaround.mappedByList(this, f);
-
   Iterable<StyleSheet> where(bool f(StyleSheet element)) =>
       IterableMixinWorkaround.where(this, f);
 
@@ -29397,7 +29286,7 @@ class _StyleSheetList implements JavaScriptIndexingBehavior, List<StyleSheet> na
     throw new UnsupportedError("Cannot clear immutable List.");
   }
 
-  List<StyleSheet> get reversed {
+  Iterable<StyleSheet> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -29903,8 +29792,6 @@ abstract class CssClassSet implements Set<String> {
 
   Iterable map(f(String element)) => readClasses().map(f);
 
-  Iterable mappedBy(f(String element)) => readClasses().mappedBy(f);
-
   Iterable<String> where(bool f(String element)) => readClasses().where(f);
 
   Iterable expand(Iterable f(String element)) => readClasses.expand(f);