Move code for instantiating Invocation to Target.

pkg/kernel/lib/target/flutter.dart

Index: pkg/kernel/lib/target/flutter.dart
diff --git a/pkg/kernel/lib/target/flutter.dart b/pkg/kernel/lib/target/flutter.dart
index 911abed1be95536449537f0a2b28ca765ffe1d6b..0c311e3b73594ebd71ea0edb166af0443fefc4a8 100644
--- a/pkg/kernel/lib/target/flutter.dart
+++ b/pkg/kernel/lib/target/flutter.dart
@@ -50,7 +50,7 @@ class FlutterTarget extends Target {
       ];
 
   void performModularTransformations(Program program) {
-    new mix.MixinFullResolution().transform(program);
+    new mix.MixinFullResolution(this).transform(program);
   }
 
   void performGlobalTransformations(Program program) {
@@ -66,4 +66,11 @@ class FlutterTarget extends Target {
 
     new SanitizeForVM().transform(program);
   }
+
+  @override
+  Expression instantiateInvocation(Member target, Expression receiver,
+      String name, Arguments arguments, int offset, bool isSuper) {
+    // TODO(ahe): This should probably return the same as VmTarget does.
+    return new InvalidExpression();
+  }
 }