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

runtime/vm/object.cc

 // Copyright (c) 2012, 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.
 
 #include "vm/object.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/cpu.h"
@@ skipping 8382 matching lines @@
 RawLibrary* Library::CoreLibrary() {
   return Isolate::Current()->object_store()->core_library();
 }
 
 
 RawLibrary* Library::CollectionLibrary() {
   return Isolate::Current()->object_store()->collection_library();
 }
 
 
-RawLibrary* Library::CollectionDevLibrary() {
-  return Isolate::Current()->object_store()->collection_dev_library();
+RawLibrary* Library::InternalLibrary() {
+  return Isolate::Current()->object_store()->internal_library();
 }
 
 
 RawLibrary* Library::IsolateLibrary() {
   return Isolate::Current()->object_store()->isolate_library();
 }
 
 
 RawLibrary* Library::MathLibrary() {
   return Isolate::Current()->object_store()->math_library();
@@ skipping 8560 matching lines @@
   return "_MirrorReference";
 }
 
 
 void MirrorReference::PrintToJSONStream(JSONStream* stream, bool ref) const {
   Instance::PrintToJSONStream(stream, ref);
 }
 
 
 }  // namespace dart