Remove List.copyFrom from VM and from tests. It was removed from the List interface in r941.

tests/language/list_test.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.
 // Dart test program for testing arrays.
 
 class ListTest {
   static void TestIterator() {
     List<int> a = new List<int>(10);
     int count = 0;
 
@@ skipping 41 matching lines @@
     try {
       var x = a[len];
     } catch (IndexOutOfRangeException e) {
       exception_caught = true;
     }
     Expect.equals(true, exception_caught);
 
     exception_caught = false;
     try {
       List a = new List(4);
-      a.copyFrom(a, null, 1, 1);
-    } catch (IllegalArgumentException e) {
+      a.setRange(1, 1, a, null);
+    } catch (Exception e) {
       exception_caught = true;
     }
     Expect.equals(true, exception_caught);
 
     exception_caught = false;
     try {
       List a = new List(4);
-      a.copyFrom(a, 10, 1, 1);
+      a.setRange(10, 1, a, 1);
     } catch (IndexOutOfRangeException e) {
       exception_caught = true;
     }
     Expect.equals(true, exception_caught);
 
     exception_caught = false;
     try {
       List a = new List(4);
       List b = new List(4);
-      b.copyFrom(a, 0, 0, 4);
+      b.setRange(0, 4, a, 0);
     } catch (var e) {
       exception_caught = true;
     }
     Expect.equals(false, exception_caught);
 
     List<int> unsorted = [4, 3, 9, 12, -4, 9];
     int compare(a, b) {
       if (a < b) return -1;
       if (a > b) return 1;
       return 0;
@@ skipping 54 matching lines @@
       exceptionCaught = true;
     }
     Expect.equals(0, list.length);
     Expect.equals(true, exceptionCaught);
   }
 }
 
 main() {
   ListTest.testMain();
 }