Moved most of html lib generating scripts into tools.

sdk/lib/html/templates/immutable_list_mixin.darttemplate

-  // -- start List<$E> mixins.
-  // $E is the element type.
-
-  // From Iterable<$E>:
-
-  Iterator<$E> iterator() {
-    // Note: NodeLists are not fixed size. And most probably length shouldn't
-    // be cached in both iterator _and_ forEach method. For now caching it
-    // for consistency.
-    return new FixedSizeListIterator<$E>(this);
-  }
-
-  // From Collection<$E>:
-$if DEFINE_LENGTH_AS_NUM_ITEMS
-  // SVG Collections expose numberOfItems rather than length.
-  int get length => numberOfItems;
-$endif
-
-  void add($E value) {
-    throw new UnsupportedError("Cannot add to immutable List.");
-  }
-
-  void addLast($E value) {
-    throw new UnsupportedError("Cannot add to immutable List.");
-  }
-
-  void addAll(Collection<$E> collection) {
-    throw new UnsupportedError("Cannot add to immutable List.");
-  }
-
-  dynamic reduce(dynamic initialValue, dynamic combine(dynamic, $E)) {
-    return Collections.reduce(this, initialValue, combine);
-  }
-
-$if DEFINE_CONTAINS
-  bool contains($E element) => Collections.contains(this, element);
-$else
-  // contains() defined by IDL.
-$endif
-
-  void forEach(void f($E element)) => Collections.forEach(this, f);
-
-  Collection map(f($E element)) => Collections.map(this, [], f);
-
-  Collection<$E> filter(bool f($E element)) =>
-     Collections.filter(this, <$E>[], f);
-
-  bool every(bool f($E element)) => Collections.every(this, f);
-
-  bool some(bool f($E element)) => Collections.some(this, f);
-
-  bool get isEmpty => this.length == 0;
-
-  // From List<$E>:
-$if DEFINE_LENGTH_SETTER
-  void set length(int value) {
-    throw new UnsupportedError("Cannot resize immutable List.");
-  }
-$endif
-
-$if DEFINE_CLEAR
-  void clear() {
-    throw new UnsupportedError("Cannot clear immutable List.");
-  }
-$else
-  // contains() defined by IDL.
-$endif
-
-  void sort([int compare($E a, $E b)]) {
-    throw new UnsupportedError("Cannot sort immutable List.");
-  }
-
-  int indexOf($E element, [int start = 0]) =>
-      Lists.indexOf(this, element, start, this.length);
-
-  int lastIndexOf($E element, [int start]) {
-    if (start == null) start = length - 1;
-    return Lists.lastIndexOf(this, element, start);
-  }
-
-  $E get first => this[0];
-
-  $E get last => this[length - 1];
-
-  $E removeAt(int pos) {
-    throw new UnsupportedError("Cannot removeAt on immutable List.");
-  }
-
-  $E removeLast() {
-    throw new UnsupportedError("Cannot removeLast on immutable List.");
-  }
-
-  void setRange(int start, int rangeLength, List<$E> from, [int startFrom]) {
-    throw new UnsupportedError("Cannot setRange on immutable List.");
-  }
-
-  void removeRange(int start, int rangeLength) {
-    throw new UnsupportedError("Cannot removeRange on immutable List.");
-  }
-
-  void insertRange(int start, int rangeLength, [$E initialValue]) {
-    throw new UnsupportedError("Cannot insertRange on immutable List.");
-  }
-
-  List<$E> getRange(int start, int rangeLength) =>
-      Lists.getRange(this, start, rangeLength, <$E>[]);
-
-  // -- end List<$E> mixins.