Create generic check methods for RangeError causing checks.

sdk/lib/collection/queue.dart

Index: sdk/lib/collection/queue.dart
diff --git a/sdk/lib/collection/queue.dart b/sdk/lib/collection/queue.dart
index fc568ff1cb9a8df8813645a2ba380b0bd7f646e1..eb92c7128ccc9846a12b4305194235a4a69e9509 100644
--- a/sdk/lib/collection/queue.dart
+++ b/sdk/lib/collection/queue.dart
@@ -427,9 +427,7 @@ class ListQueue<E> extends IterableBase<E> implements Queue<E> {
   }
 
   E elementAt(int index) {
-    if (index < 0 || index >= length) {
-      throw new RangeError.index(index, this);
-    }
+    RangeError.checkValidIndex(index, this);
     return _table[(_head + index) & (_table.length - 1)];
   }