Move runtime js files down to lib/runtime/dart

test/codegen/expect/html_input.html

Index: test/codegen/expect/html_input.html
diff --git a/test/codegen/expect/html_input.html b/test/codegen/expect/html_input.html
index 96ed534e35c06df93bf3e9fa7cff87a3a9c232d0..060cda11372e47b1258ecce613cd093c94b7c917 100644
--- a/test/codegen/expect/html_input.html
+++ b/test/codegen/expect/html_input.html
@@ -2,13 +2,13 @@
 <script src="dev_compiler/runtime/harmony_feature_check.js"></script>
 <script src="dev_compiler/runtime/dart_utils.js"></script>
 <script src="dev_compiler/runtime/dart_library.js"></script>
-<script src="dev_compiler/runtime/_errors.js"></script>
-<script src="dev_compiler/runtime/_generators.js"></script>
-<script src="dev_compiler/runtime/_types.js"></script>
-<script src="dev_compiler/runtime/_rtti.js"></script>
-<script src="dev_compiler/runtime/_classes.js"></script>
-<script src="dev_compiler/runtime/_operations.js"></script>
-<script src="dev_compiler/runtime/dart_runtime.js"></script>
+<script src="dev_compiler/runtime/dart/_errors.js"></script>
+<script src="dev_compiler/runtime/dart/_generators.js"></script>
+<script src="dev_compiler/runtime/dart/_types.js"></script>
+<script src="dev_compiler/runtime/dart/_rtti.js"></script>
+<script src="dev_compiler/runtime/dart/_classes.js"></script>
+<script src="dev_compiler/runtime/dart/_operations.js"></script>
+<script src="dev_compiler/runtime/dart/_runtime.js"></script>
 <script src="dev_compiler/runtime/dart/core.js"></script>
 <script src="dev_compiler/runtime/dart/collection.js"></script>
 <script src="dev_compiler/runtime/dart/_internal.js"></script>