(Re)move methods from internal.Lists that are not used, or only used once.

runtime/lib/internal_patch.dart

 // 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.
 
 @patch List makeListFixedLength(List growableList)
     native "Internal_makeListFixedLength";
 
 @patch List makeFixedListUnmodifiable(List fixedLengthList)
     native "Internal_makeFixedListUnmodifiable";
 
@@ skipping 25 matching lines @@
 
 bool _inquireIs64Bit() native "Internal_inquireIs64Bit";
 
 bool _classRangeCheck(int cid, int lowerLimit, int upperLimit) {
   return cid >= lowerLimit && cid <= upperLimit;
 }
 
 bool _classRangeCheckNegative(int cid, int lowerLimit, int upperLimit) {
   return cid < lowerLimit || cid > upperLimit;
 }
+
+// Utility class now only used by the VM.
+class Lists {
+  static void copy(List src, int srcStart,

[floitsch, 2017/02/15 17:11:38]

Nit: use full names.
That said: I don't think this is really public, right?

[Lasse Reichstein Nielsen, 2017/02/17 11:25:20]

Correct. I dare not touch it, since it seems to be detected by the VM method
recognizer.

+                   List dst, int dstStart, int count) {
+    if (srcStart < dstStart) {
+      for (int i = srcStart + count - 1, j = dstStart + count - 1;
+           i >= srcStart; i--, j--) {
+        dst[j] = src[i];
+      }
+    } else {
+      for (int i = srcStart, j = dstStart; i < srcStart + count; i++, j++) {
+        dst[j] = src[i];
+      }
+    }
+  }
+}