don't use JS_CONST in dart:html

tool/sdk_expected_errors.txt

Index: tool/sdk_expected_errors.txt
diff --git a/tool/sdk_expected_errors.txt b/tool/sdk_expected_errors.txt
index a6f145339ebc1108b6e37b13c0b5d8c82a56e222..e64aa0061d09010da39efcf4cc1c0e83f5e4d3fe 100644
--- a/tool/sdk_expected_errors.txt
+++ b/tool/sdk_expected_errors.txt
@@ -5,25 +5,25 @@
 [error] Invalid override. The type of ChunkedConverter.bind ((dynamic) → dynamic) is not a subtype of StreamTransformer<S, T>.bind ((Stream<S>) → Stream<T>). (dart:convert/chunked_conversion.dart, line 14, col 3)
 [error] Invalid override. The type of ChunkedConverter.startChunkedConversion ((dynamic) → dynamic) is not a subtype of Converter<S, T>.startChunkedConversion ((Sink<T>) → Sink<S>). (dart:convert/chunked_conversion.dart, line 15, col 3)
 [error] Annotation can be only constant variable or constant constructor invocation (dart:core/stacktrace.dart, line 43, col 3)
-[error] Invalid override. The type of FileList.[]= ((int, File) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 16869, col 3)
-[error] Invalid override. The type of HtmlCollection.[]= ((int, Node) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 18904, col 3)
-[error] Invalid override. The type of MimeTypeArray.[]= ((int, MimeType) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 23818, col 3)
-[error] Invalid override. The type of NodeList.[]= ((int, Node) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 25467, col 3)
-[error] Invalid override. The type of PluginArray.[]= ((int, Plugin) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 26971, col 3)
-[error] Invalid override. The type of SourceBufferList.[]= ((int, SourceBuffer) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 30209, col 3)
-[error] Invalid override. The type of SpeechGrammarList.[]= ((int, SpeechGrammar) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 30410, col 3)
-[error] Invalid override. The type of TextTrackList.[]= ((int, TextTrack) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 32569, col 3)
-[error] Invalid override. The type of TouchList.[]= ((int, Touch) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 32904, col 3)
-[error] The return type '_ElementEventStreamImpl<Event>' is not a 'ElementStream<BeforeUnloadEvent>', as defined by the method 'forElement'. (dart:html, line 36588, col 12)
-[error] The return type '_ElementListEventStreamImpl<Event>' is not a 'ElementStream<BeforeUnloadEvent>', as defined by the method '_forElementList'. (dart:html, line 36593, col 12)
-[error] Invalid override. The type of _CssRuleList.[]= ((int, CssRule) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 37675, col 3)
-[error] Invalid override. The type of _GamepadList.[]= ((int, Gamepad) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 37929, col 3)
-[error] Invalid override. The type of _NamedNodeMap.[]= ((int, Node) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 38136, col 3)
-[error] Invalid override. The type of _SpeechRecognitionResultList.[]= ((int, SpeechRecognitionResult) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 38352, col 3)
-[error] Invalid override. The type of _StyleSheetList.[]= ((int, StyleSheet) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 38416, col 3)
-[error] The return type '_ElementListEventStreamImpl<Event>' is not a 'ElementStream<T>', as defined by the method '_forElementList'. (dart:html, line 39935, col 12)
-[error] Invalid override. The type of _EventStreamSubscription.asFuture (([dynamic]) → Future<dynamic>) is not a subtype of StreamSubscription<T>.asFuture (<E>([E]) → Future<E>). (dart:html, line 40153, col 3)
-[error] The return type '_WrappedIterator<Node>' is not a 'Iterator<E>', as defined by the method 'iterator'. (dart:html, line 42531, col 31)
+[error] Invalid override. The type of FileList.[]= ((int, File) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 16868, col 3)
+[error] Invalid override. The type of HtmlCollection.[]= ((int, Node) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 18903, col 3)
+[error] Invalid override. The type of MimeTypeArray.[]= ((int, MimeType) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 23817, col 3)
+[error] Invalid override. The type of NodeList.[]= ((int, Node) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 25466, col 3)
+[error] Invalid override. The type of PluginArray.[]= ((int, Plugin) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 26970, col 3)
+[error] Invalid override. The type of SourceBufferList.[]= ((int, SourceBuffer) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 30208, col 3)
+[error] Invalid override. The type of SpeechGrammarList.[]= ((int, SpeechGrammar) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 30409, col 3)
+[error] Invalid override. The type of TextTrackList.[]= ((int, TextTrack) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 32568, col 3)
+[error] Invalid override. The type of TouchList.[]= ((int, Touch) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 32903, col 3)
+[error] The return type '_ElementEventStreamImpl<Event>' is not a 'ElementStream<BeforeUnloadEvent>', as defined by the method 'forElement'. (dart:html, line 36587, col 12)
+[error] The return type '_ElementListEventStreamImpl<Event>' is not a 'ElementStream<BeforeUnloadEvent>', as defined by the method '_forElementList'. (dart:html, line 36592, col 12)
+[error] Invalid override. The type of _CssRuleList.[]= ((int, CssRule) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 37674, col 3)
+[error] Invalid override. The type of _GamepadList.[]= ((int, Gamepad) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 37928, col 3)
+[error] Invalid override. The type of _NamedNodeMap.[]= ((int, Node) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 38135, col 3)
+[error] Invalid override. The type of _SpeechRecognitionResultList.[]= ((int, SpeechRecognitionResult) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 38351, col 3)
+[error] Invalid override. The type of _StyleSheetList.[]= ((int, StyleSheet) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 38415, col 3)
+[error] The return type '_ElementListEventStreamImpl<Event>' is not a 'ElementStream<T>', as defined by the method '_forElementList'. (dart:html, line 39934, col 12)
+[error] Invalid override. The type of _EventStreamSubscription.asFuture (([dynamic]) → Future<dynamic>) is not a subtype of StreamSubscription<T>.asFuture (<E>([E]) → Future<E>). (dart:html, line 40152, col 3)
+[error] The return type '_WrappedIterator<Node>' is not a 'Iterator<E>', as defined by the method 'iterator'. (dart:html, line 42530, col 31)
 [error] The part was not supplied as an input to the compiler. (dart:html_common/conversions.dart, line 1, col 1)
 [error] The part was not supplied as an input to the compiler. (dart:html_common/conversions_dart2js.dart, line 1, col 1)
 [error] The part was not supplied as an input to the compiler. (dart:html_common/css_class_set.dart, line 1, col 1)
@@ -110,41 +110,41 @@
 [warning] The final variables 'form', 'labels' and '3' more must be initialized (dart:html, line 1691, col 3)
 [warning] Unsound implicit cast from dynamic to List<num> (dart:html, line 2723, col 14)
 [warning] Unsound implicit cast from dynamic to List<num> (dart:html, line 2725, col 14)
-[warning] The final variable 'options' must be initialized (dart:html, line 8973, col 3)
-[warning] The final variables '_attributes', '_childElementCount' and '16' more must be initialized (dart:html, line 13010, col 3)
-[warning] The final variables 'elements', 'form' and '4' more must be initialized (dart:html, line 16626, col 3)
-[warning] The final variable 'length' must be initialized (dart:html, line 17556, col 3)
-[warning] The final variables '_get_contentWindow' and 'sandbox' must be initialized (dart:html, line 20114, col 3)
-[warning] The final variables 'complete', 'currentSrc' and '2' more must be initialized (dart:html, line 20247, col 3)
-[warning] The final variables '_get_valueAsDate', 'entries' and '6' more must be initialized (dart:html, line 20401, col 3)
-[warning] The final variables 'form', 'labels' and '4' more must be initialized (dart:html, line 21437, col 3)
-[warning] The final variables 'control' and 'form' must be initialized (dart:html, line 21548, col 3)
-[warning] The final variable 'form' must be initialized (dart:html, line 21582, col 3)
-[warning] The final variables 'import', 'sheet' and '1' more must be initialized (dart:html, line 21608, col 3)
-[warning] The final variable 'areas' must be initialized (dart:html, line 21760, col 3)
-[warning] The final variables 'audioDecodedByteCount', 'audioTracks' and '16' more must be initialized (dart:html, line 21986, col 3)
-[warning] The final variable 'labels' must be initialized (dart:html, line 23502, col 3)
-[warning] The final variables '_localName', '_namespaceUri' and '12' more must be initialized (dart:html, line 24940, col 3)
-[warning] The final variables 'form', 'validationMessage' and '2' more must be initialized (dart:html, line 25821, col 3)
-[warning] The final variables 'form' and 'index' must be initialized (dart:html, line 25956, col 3)
-[warning] The final variables 'form', 'htmlFor' and '5' more must be initialized (dart:html, line 26010, col 3)
-[warning] The final variables 'labels' and 'position' must be initialized (dart:html, line 27416, col 3)
-[warning] The final variables 'form', 'labels' and '4' more must be initialized (dart:html, line 29187, col 3)
-[warning] The final variable 'sheet' must be initialized (dart:html, line 31443, col 3)
-[warning] The final variable 'cellIndex' must be initialized (dart:html, line 31663, col 3)
-[warning] The final variables '_rows' and '_tBodies' must be initialized (dart:html, line 31774, col 3)
-[warning] The final variables '_cells', 'rowIndex' and '1' more must be initialized (dart:html, line 31884, col 3)
-[warning] The final variable '_rows' must be initialized (dart:html, line 31951, col 3)
-[warning] The final variable 'content' must be initialized (dart:html, line 31994, col 3)
-[warning] The final variables 'form', 'labels' and '5' more must be initialized (dart:html, line 32070, col 3)
-[warning] The final variables 'readyState' and 'track' must be initialized (dart:html, line 33057, col 3)
-[warning] The final variables 'decodedFrameCount', 'droppedFrameCount' and '2' more must be initialized (dart:html, line 33755, col 3)
-[warning] Unsound implicit cast from dynamic to Rectangle<num> (dart:html, line 37619, col 14)
-[warning] Unsound implicit cast from dynamic to Rectangle<num> (dart:html, line 37627, col 14)
-[warning] Unsound implicit cast from dynamic to Rectangle<num> (dart:html, line 37635, col 14)
-[warning] Unsound implicit cast from (T) → void to (Event) → dynamic (dart:html, line 40091, col 67)
-[warning] Unsound implicit cast from (T) → void to (Event) → dynamic (dart:html, line 40113, col 45)
-[warning] Unsound implicit cast from From to To (dart:html, line 42594, col 70)
+[warning] The final variable 'options' must be initialized (dart:html, line 8972, col 3)
+[warning] The final variables '_attributes', '_childElementCount' and '16' more must be initialized (dart:html, line 13009, col 3)
+[warning] The final variables 'elements', 'form' and '4' more must be initialized (dart:html, line 16625, col 3)
+[warning] The final variable 'length' must be initialized (dart:html, line 17555, col 3)
+[warning] The final variables '_get_contentWindow' and 'sandbox' must be initialized (dart:html, line 20113, col 3)
+[warning] The final variables 'complete', 'currentSrc' and '2' more must be initialized (dart:html, line 20246, col 3)
+[warning] The final variables '_get_valueAsDate', 'entries' and '6' more must be initialized (dart:html, line 20400, col 3)
+[warning] The final variables 'form', 'labels' and '4' more must be initialized (dart:html, line 21436, col 3)
+[warning] The final variables 'control' and 'form' must be initialized (dart:html, line 21547, col 3)
+[warning] The final variable 'form' must be initialized (dart:html, line 21581, col 3)
+[warning] The final variables 'import', 'sheet' and '1' more must be initialized (dart:html, line 21607, col 3)
+[warning] The final variable 'areas' must be initialized (dart:html, line 21759, col 3)
+[warning] The final variables 'audioDecodedByteCount', 'audioTracks' and '16' more must be initialized (dart:html, line 21985, col 3)
+[warning] The final variable 'labels' must be initialized (dart:html, line 23501, col 3)
+[warning] The final variables '_localName', '_namespaceUri' and '12' more must be initialized (dart:html, line 24939, col 3)
+[warning] The final variables 'form', 'validationMessage' and '2' more must be initialized (dart:html, line 25820, col 3)
+[warning] The final variables 'form' and 'index' must be initialized (dart:html, line 25955, col 3)
+[warning] The final variables 'form', 'htmlFor' and '5' more must be initialized (dart:html, line 26009, col 3)
+[warning] The final variables 'labels' and 'position' must be initialized (dart:html, line 27415, col 3)
+[warning] The final variables 'form', 'labels' and '4' more must be initialized (dart:html, line 29186, col 3)
+[warning] The final variable 'sheet' must be initialized (dart:html, line 31442, col 3)
+[warning] The final variable 'cellIndex' must be initialized (dart:html, line 31662, col 3)
+[warning] The final variables '_rows' and '_tBodies' must be initialized (dart:html, line 31773, col 3)
+[warning] The final variables '_cells', 'rowIndex' and '1' more must be initialized (dart:html, line 31883, col 3)
+[warning] The final variable '_rows' must be initialized (dart:html, line 31950, col 3)
+[warning] The final variable 'content' must be initialized (dart:html, line 31993, col 3)
+[warning] The final variables 'form', 'labels' and '5' more must be initialized (dart:html, line 32069, col 3)
+[warning] The final variables 'readyState' and 'track' must be initialized (dart:html, line 33056, col 3)
+[warning] The final variables 'decodedFrameCount', 'droppedFrameCount' and '2' more must be initialized (dart:html, line 33754, col 3)
+[warning] Unsound implicit cast from dynamic to Rectangle<num> (dart:html, line 37618, col 14)
+[warning] Unsound implicit cast from dynamic to Rectangle<num> (dart:html, line 37626, col 14)
+[warning] Unsound implicit cast from dynamic to Rectangle<num> (dart:html, line 37634, col 14)
+[warning] Unsound implicit cast from (T) → void to (Event) → dynamic (dart:html, line 40090, col 67)
+[warning] Unsound implicit cast from (T) → void to (Event) → dynamic (dart:html, line 40112, col 45)
+[warning] Unsound implicit cast from From to To (dart:html, line 42593, col 70)
 [warning] Unsound implicit cast from dynamic to To (dart:indexed_db, line 1205, col 37)
 [warning] Unsound implicit cast from num to T (dart:math/rectangle.dart, line 151, col 22)
 [warning] Unsound implicit cast from num to T (dart:math/rectangle.dart, line 152, col 23)