Create LibraryElement.loadLibrary during resynth.

pkg/analyzer/lib/src/summary/resynthesize.dart

Index: pkg/analyzer/lib/src/summary/resynthesize.dart
diff --git a/pkg/analyzer/lib/src/summary/resynthesize.dart b/pkg/analyzer/lib/src/summary/resynthesize.dart
index 23b103cb3f4d6c44f4390ee411e1e9892b8566e2..565d23c87da6c596fc1b554d05e0d2d95d49c3af 100644
--- a/pkg/analyzer/lib/src/summary/resynthesize.dart
+++ b/pkg/analyzer/lib/src/summary/resynthesize.dart
@@ -714,6 +714,11 @@ class _LibraryResynthesizer {
         libraryElement.exportNamespace.definedNames.values.firstWhere(
             (element) => element is FunctionElement && element.isEntryPoint,
             orElse: () => null);
+    // Create the synthetic element for `loadLibrary`.
+    if (!isCoreLibrary) {

[Paul Berry, 2016/01/13 16:07:49]

This seems like a bug.  The language spec allows `dart:core` to be imported with
a deferred import (and I just tested that it works with analyzer, the VM, and
dart2js), so I think we have to create the `loadLibrary` function for all
libraries, even `dart:core`.

[scheglov, 2016/01/13 16:51:54]

Done.

+      libraryElement
+          .createLoadLibraryFunction(summaryResynthesizer.typeProvider);
+    }
     // Done.
     return libraryElement;
   }