Fix 'collection' tests and co19 dartc/dart2js status files.

tests/corelib/collection_test.dart

Index: tests/corelib/collection_test.dart
diff --git a/tests/corelib/collection_test.dart b/tests/corelib/collection_test.dart
index d258fe64b4dfd852d2f4a094f60f07589cad4696..680e20ab7268cb42862c6c961168a9776f246c39 100644
--- a/tests/corelib/collection_test.dart
+++ b/tests/corelib/collection_test.dart
@@ -8,13 +8,13 @@ import "package:expect/expect.dart";
 import 'dart:collection' show Queue;
 
 class CollectionTest {
-  CollectionTest(Collection collection) {
-    testFold(collection);
+  CollectionTest(Iterable iterable) {
+    testFold(iterable);
   }
 
-  void testFold(Collection collection) {
-    Expect.equals(28, collection.fold(0, (prev, element) => prev + element));
-    Expect.equals(3024, collection.fold(1, (prev, element) => prev * element));
+  void testFold(Iterable iterable) {
+    Expect.equals(28, iterable.fold(0, (prev, element) => prev + element));
+    Expect.equals(3024, iterable.fold(1, (prev, element) => prev * element));
   }
 }