Clean up (most) uses of Array. Still more to come in the VM corelib code base.

compiler/lib/implementation/arrays.dart

 // Copyright (c) 2011, 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.
 
+// TODO(ngeoffray): Rename to Lists.
 class Arrays {
 
   static void copy(List<Object> src, int srcStart,
                    List<Object> dst, int dstStart, int count) {
     if (srcStart === null) srcStart = 0;
     if (dstStart === null) dstStart = 0;
 
     if (srcStart < dstStart) {
       for (int i = srcStart + count - 1, j = dstStart + count - 1;
            i >= srcStart; i--, j--) {
@@ skipping 42 matching lines @@
       startIndex = a.length - 1;
     }
     for (int i = startIndex; i >= 0; i--) {
       if (a[i] == element) {
         return i;
       }
     }
     return -1;
   }
 
-  static void rangeCheck(Array a, int start, int length) {
+  static void rangeCheck(List a, int start, int length) {
     if (length < 0) {
       throw new IllegalArgumentException("negative length $length");
     }
     if (start < 0 || start >= a.length) {
       throw new IndexOutOfRangeException(start);
     }
     if (start + length > a.length) {
       throw new IndexOutOfRangeException(start + length);
     }
   }
 }