Revert "Rename internal library dart:_collection-dev to dart:_internal."

runtime/lib/object_patch.dart

Index: runtime/lib/object_patch.dart
diff --git a/runtime/lib/object_patch.dart b/runtime/lib/object_patch.dart
index 491f9c0c3718169b632af7f974859c7ab1954455..fa8e10e5d4a4517efc940fa5386fb0798f42d63a 100644
--- a/runtime/lib/object_patch.dart
+++ b/runtime/lib/object_patch.dart
@@ -43,7 +43,7 @@ patch class Object {
 
   /* patch */ noSuchMethod(Invocation invocation) {
     return _noSuchMethod(invocation.isMethod,
-                         _collection_dev.Symbol.getName(invocation.memberName),
+                         internal.Symbol.getName(invocation.memberName),
                          invocation._type,
                          invocation.positionalArguments,
                          _symbolMapToStringMap(invocation.namedArguments));
@@ -66,7 +66,7 @@ patch class Object {
   static _symbolMapToStringMap(Map<Symbol, dynamic> map) {
     var result = new Map<String, dynamic>();
     map.forEach((Symbol key, value) {
-      result[_collection_dev.Symbol.getName(key)] = value;
+      result[internal.Symbol.getName(key)] = value;
     });
     return result;
   }