Resynthesize top-level functions from Kernel.

pkg/analyzer/lib/src/dart/element/element.dart

Index: pkg/analyzer/lib/src/dart/element/element.dart
diff --git a/pkg/analyzer/lib/src/dart/element/element.dart b/pkg/analyzer/lib/src/dart/element/element.dart
index 4c8b9c74ad6bb34f7ba2b0e23ca2c3231ef9a941..e410265d8f9bc5fbb14d913f4459d549485ebce7 100644
--- a/pkg/analyzer/lib/src/dart/element/element.dart
+++ b/pkg/analyzer/lib/src/dart/element/element.dart
@@ -1540,6 +1540,12 @@ class CompilationUnitElementImpl extends UriReferencedElementImpl
 
   @override
   List<FunctionElement> get functions {
+    if (_kernelContext != null) {
+      _functions ??= _kernelContext.library.procedures
+          .where((k) => k.kind == kernel.ProcedureKind.Method)
+          .map((k) => new FunctionElementImpl.forKernel(this, k))
+          .toList(growable: false);
+    }
     if (_unlinkedUnit != null) {
       _functions ??= _unlinkedUnit.executables
           .where((e) => e.kind == UnlinkedExecutableKind.functionOrMethod)
@@ -4457,6 +4463,13 @@ class FunctionElementImpl extends ExecutableElementImpl
       : super.forSerialized(serializedExecutable, enclosingElement);
 
   /**
+   * Initialize using the given kernel.
+   */
+  FunctionElementImpl.forKernel(
+      ElementImpl enclosingElement, kernel.Procedure kernel)
+      : super.forKernel(enclosingElement, kernel);
+
+  /**
    * Synthesize an unnamed function element that takes [parameters] and returns
    * [returnType].
    */