Fix some static member emits

lib/runtime/dart/_internal.js

 var _internal;
 (function(exports) {
   'use strict';
   class EfficientLength extends core.Object {}
   let ListIterable$ = dart.generic(function(E) {
     class ListIterable extends collection.IterableBase$(E) {
       ListIterable() {
         super.IterableBase();
       }
       get [core.$iterator]() {
@@ skipping 333 matching lines @@
     }
     ListIterator[dart.implements] = () => [core.Iterator$(E)];
     return ListIterator;
   });
   let ListIterator = ListIterator$();
   let _Transformation$ = dart.generic(function(S, T) {
     let _Transformation = dart.typedef('_Transformation', () => dart.functionType(T, [S]));
     return _Transformation;
   });
   let _Transformation = _Transformation$();
-  let _ = dart.JsSymbol('_');
   let _f = dart.JsSymbol('_f');
   let MappedIterable$ = dart.generic(function(S, T) {
     class MappedIterable extends collection.IterableBase$(T) {
       MappedIterable(iterable, func) {
         if (dart.is(iterable, EfficientLength)) {
           return new (EfficientLengthMappedIterable$(S, T))(iterable, func);
         }
-        return new MappedIterable$(S, T)[_](dart.as(iterable, core.Iterable$(S)), func);
+        return new MappedIterable$(S, T)._(dart.as(iterable, core.Iterable$(S)), func);
       }
       _(iterable, f) {
         this[_iterable] = iterable;
         this[_f] = f;
         super.IterableBase();
       }
       get [core.$iterator]() {
         return new (MappedIterator$(S, T))(this[_iterable][core.$iterator], this[_f]);
       }
       get [core.$length]() {
@@ skipping 167 matching lines @@
   let _takeCount = dart.JsSymbol('_takeCount');
   let TakeIterable$ = dart.generic(function(E) {
     class TakeIterable extends collection.IterableBase$(E) {
       TakeIterable(iterable, takeCount) {
         if (!(typeof takeCount == 'number') || dart.notNull(takeCount) < 0) {
           throw new core.ArgumentError(takeCount);
         }
         if (dart.is(iterable, EfficientLength)) {
           return new (EfficientLengthTakeIterable$(E))(iterable, takeCount);
         }
-        return new TakeIterable$(E)[_](iterable, takeCount);
+        return new TakeIterable$(E)._(iterable, takeCount);
       }
       _(iterable, takeCount) {
         this[_iterable] = iterable;
         this[_takeCount] = takeCount;
         super.IterableBase();
       }
       get [core.$iterator]() {
         return new (TakeIterator$(E))(this[_iterable][core.$iterator], this[_takeCount]);
       }
     }
@@ skipping 82 matching lines @@
     return TakeWhileIterator;
   });
   let TakeWhileIterator = TakeWhileIterator$();
   let _skipCount = dart.JsSymbol('_skipCount');
   let SkipIterable$ = dart.generic(function(E) {
     class SkipIterable extends collection.IterableBase$(E) {
       SkipIterable(iterable, count) {
         if (dart.is(iterable, EfficientLength)) {
           return new (EfficientLengthSkipIterable$(E))(iterable, count);
         }
-        return new SkipIterable$(E)[_](iterable, count);
+        return new SkipIterable$(E)._(iterable, count);
       }
       _(iterable, skipCount) {
         this[_iterable] = iterable;
         this[_skipCount] = skipCount;
         super.IterableBase();
         if (!(typeof this[_skipCount] == 'number')) {
           throw new core.ArgumentError.value(this[_skipCount], "count is not an integer");
         }
         core.RangeError.checkNotNegative(this[_skipCount], "count");
       }
       [core.$skip](count) {
         if (!(typeof this[_skipCount] == 'number')) {
           throw new core.ArgumentError.value(this[_skipCount], "count is not an integer");
         }
         core.RangeError.checkNotNegative(this[_skipCount], "count");
-        return new SkipIterable$(E)[_](this[_iterable], dart.notNull(this[_skipCount]) + dart.notNull(count));
+        return new SkipIterable$(E)._(this[_iterable], dart.notNull(this[_skipCount]) + dart.notNull(count));
       }
       get [core.$iterator]() {
         return new (SkipIterator$(E))(this[_iterable][core.$iterator], this[_skipCount]);
       }
     }
     dart.defineNamedConstructor(SkipIterable, '_');
     return SkipIterable;
   });
   let SkipIterable = SkipIterable$();
   let EfficientLengthSkipIterable$ = dart.generic(function(E) {
@@ skipping 1282 matching lines @@
   exports.ReversedListIterable = ReversedListIterable;
   exports.UnmodifiableListError = UnmodifiableListError;
   exports.NonGrowableListError = NonGrowableListError;
   exports.makeListFixedLength = makeListFixedLength;
   exports.Lists = Lists;
   exports.printToConsole = printToConsole;
   exports.Sort = Sort;
   exports.Symbol = Symbol;
   exports.POWERS_OF_TEN = POWERS_OF_TEN;
 })(_internal || (_internal = {}));