Remove deprecated StringBuffer.add, addAll and addCharCode.

sdk/lib/collection/collections.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of dart.collection;
 
 /**
  * This class provides default implementations for Iterables (including Lists).
  *
  * Once Dart receives Mixins it will be replaced with mixin classes.
@@ skipping 261 matching lines @@
     }
     throw new RangeError.value(index);
   }
 
   static String join(Iterable iterable, [String separator]) {
     Iterator iterator = iterable.iterator;
     if (!iterator.moveNext()) return "";
     StringBuffer buffer = new StringBuffer();
     if (separator == null || separator == "") {
       do {
-        buffer.add("${iterator.current}");
+        buffer.write("${iterator.current}");
       } while (iterator.moveNext());
     } else {
-      buffer.add("${iterator.current}");
+      buffer.write("${iterator.current}");
       while (iterator.moveNext()) {
-        buffer.add(separator);
-        buffer.add("${iterator.current}");
+        buffer.write(separator);
+        buffer.write("${iterator.current}");
       }
     }
     return buffer.toString();
   }
 
   static String joinList(List list, [String separator]) {
     if (list.isEmpty) return "";
     if (list.length == 1) return "${list[0]}";
     StringBuffer buffer = new StringBuffer();
     if (separator == null || separator == "") {
       for (int i = 0; i < list.length; i++) {
-        buffer.add("${list[i]}");
+        buffer.write("${list[i]}");
       }
     } else {
-      buffer.add("${list[0]}");
+      buffer.write("${list[0]}");
       for (int i = 1; i < list.length; i++) {
-        buffer.add(separator);
-        buffer.add("${list[i]}");
+        buffer.write(separator);
+        buffer.write("${list[i]}");
       }
     }
     return buffer.toString();
   }
 
   static Iterable where(Iterable iterable, bool f(var element)) {
     return new WhereIterable(iterable, f);
   }
 
   static Iterable map(Iterable iterable, f(var element)) {
@@ skipping 77 matching lines @@
  * The source of the elements may be a [List] or any [Iterable] with
  * efficient [Iterable.length] and [Iterable.elementAt].
  */
 class UnmodifiableListView<E> extends UnmodifiableListBase<E> {
   Iterable<E> _source;
   /** Create an unmodifiable list backed by [source]. */
   UnmodifiableListView(Iterable<E> source) : _source = source;
   int get length => _source.length;
   E operator[](int index) => _source.elementAt(index);
 }