Support serialization of loadLibrary

pkg/compiler/lib/src/common/names.dart

Index: pkg/compiler/lib/src/common/names.dart
diff --git a/pkg/compiler/lib/src/common/names.dart b/pkg/compiler/lib/src/common/names.dart
index 300d1765093b4d194bcd7a33244256514a9d6845..2fa535b4e1af16e9a0dcba9b4f64a7e17e189da4 100644
--- a/pkg/compiler/lib/src/common/names.dart
+++ b/pkg/compiler/lib/src/common/names.dart
@@ -26,6 +26,9 @@ class Identifiers {
   /// The name of the iterator property used in for-each loops.
   static const String iterator = 'iterator';
 
+  /// The name of the `loadLibrary` getter defined on deferred prefixes.
+  static const String loadLibrary = 'loadLibrary';
+
   /// The name of the main method.
   static const String main = 'main';