Handle local functions in kernel_impact.

pkg/compiler/lib/src/kernel/kernel.dart

Index: pkg/compiler/lib/src/kernel/kernel.dart
diff --git a/pkg/compiler/lib/src/kernel/kernel.dart b/pkg/compiler/lib/src/kernel/kernel.dart
index fa53c0e163885f446efda9e43488590bf0f6f0b3..bd1963153afd576368b711ade1bdf3f526596386 100644
--- a/pkg/compiler/lib/src/kernel/kernel.dart
+++ b/pkg/compiler/lib/src/kernel/kernel.dart
@@ -24,6 +24,7 @@ import '../elements/elements.dart'
         FunctionElement,
         ImportElement,
         LibraryElement,
+        LocalFunctionElement,
         MixinApplicationElement,
         TypeVariableElement;
 import '../elements/modelx.dart' show ErroneousFieldElementX;
@@ -50,6 +51,9 @@ class Kernel {
   final Map<FunctionElement, ir.Member> functions =
       <FunctionElement, ir.Member>{};
 
+  final Map<LocalFunctionElement, ir.FunctionDeclaration> localFunctions =
+      <LocalFunctionElement, ir.FunctionDeclaration>{};
+
   final Map<FieldElement, ir.Field> fields = <FieldElement, ir.Field>{};
 
   final Map<TypeVariableElement, ir.TypeParameter> typeParameters =