Make List.skip, List.take and List.reversed return Iterables, not Lists.

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 2faa94caae37d6ee979f22802351f57845d7510f..41ec30246df6ef8013a5be411781db0f7ba4fde2 100644
--- a/sdk/lib/html/dart2js/html_dart2js.dart
+++ b/sdk/lib/html/dart2js/html_dart2js.dart
@@ -7443,7 +7443,7 @@ 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);
   }
 
@@ -7700,7 +7700,7 @@ 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);
   }
 
@@ -8064,7 +8064,7 @@ 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);
   }
 
@@ -8338,7 +8338,7 @@ class _ChildrenElementList implements List {
     }
   }
 
-  List<Element> get reversed {
+  Iterable<Element> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -8572,7 +8572,7 @@ class _FrozenElementList implements List {
     throw new UnsupportedError('');
   }
 
-  List<Element> get reversed {
+  Iterable<Element> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -11048,7 +11048,7 @@ 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);
   }
 
@@ -11666,7 +11666,7 @@ 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);
   }
 
@@ -11885,7 +11885,7 @@ 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);
   }
 
@@ -12406,7 +12406,7 @@ 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);
   }
 
@@ -12616,7 +12616,7 @@ 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);
   }
 
@@ -14691,7 +14691,7 @@ 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);
   }
 
@@ -14910,7 +14910,7 @@ 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);
   }
 
@@ -15129,7 +15129,7 @@ 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);
   }
 
@@ -17750,7 +17750,7 @@ class _ChildNodeListLazy implements List {
     return this[index];
   }
 
-  List<Node> get reversed {
+  Iterable<Node> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
@@ -18159,7 +18159,7 @@ 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);
   }
 
@@ -20571,7 +20571,7 @@ 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);
   }
 
@@ -20854,7 +20854,7 @@ 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);
   }
 
@@ -21471,7 +21471,7 @@ 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);
   }
 
@@ -22592,7 +22592,7 @@ 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);
   }
 
@@ -22806,7 +22806,7 @@ 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);
   }
 
@@ -23231,7 +23231,7 @@ 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);
   }
 
@@ -23680,7 +23680,7 @@ 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);
   }
 
@@ -23899,7 +23899,7 @@ 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);
   }
 
@@ -24118,7 +24118,7 @@ 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);
   }
 
@@ -24334,7 +24334,7 @@ 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);
   }
 
@@ -28298,7 +28298,7 @@ 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);
   }
 
@@ -28498,7 +28498,7 @@ 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);
   }
 
@@ -28698,7 +28698,7 @@ 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);
   }
 
@@ -28898,7 +28898,7 @@ 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);
   }
 
@@ -29098,7 +29098,7 @@ 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);
   }
 
@@ -29298,7 +29298,7 @@ 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);
   }
 
@@ -29613,7 +29613,7 @@ 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);
   }
 
@@ -29813,7 +29813,7 @@ 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);
   }
 
@@ -30037,7 +30037,7 @@ 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);
   }
 
@@ -30237,7 +30237,7 @@ 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);
   }
 
@@ -30437,7 +30437,7 @@ 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);
   }