Move to new dart:typeddata types for dart2js

tools/dom/templates/html/dart2js/impl_ArrayBuffer.darttemplate

-// Copyright (c) 2013, 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 $LIBRARYNAME;
-
-$(ANNOTATIONS)class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
-$!MEMBERS
-  @DomName('ArrayBuffer.slice')
-  ArrayBuffer slice(int begin, [int end]) {
-    // IE10 supports ArrayBuffers but does not have the slice method.
-    if (JS('bool', '!!#.slice', this)) {
-      if (?end) {
-        return JS('ArrayBuffer', '#.slice(#, #)', this, begin, end);
-      }
-      return JS('ArrayBuffer', '#.slice(#)', this, begin);
-    } else {
-      var start = begin;
-      // Negative values go from end.
-      if (start < 0) {
-        start = this.byteLength + start;
-      }
-      var finish = ?end ? min(end, byteLength) : byteLength;
-      if (finish < 0) {
-        finish = this.byteLength + finish;
-      }
-      var length = max(finish - start, 0);
-
-      var clone = new Int8Array(length);
-      var source = new Int8Array.fromBuffer(this, start);
-      for (var i = 0; i < length; ++i) {
-        clone[i] = source[i];
-      }
-      return clone.buffer;
-    }
-  }
-}