Remove use of FunctionSignature et al from call_structure.dart

pkg/compiler/lib/src/typechecker.dart

Index: pkg/compiler/lib/src/typechecker.dart
diff --git a/pkg/compiler/lib/src/typechecker.dart b/pkg/compiler/lib/src/typechecker.dart
index cb6557cf06b9aaa16b93c4c9cca1a81b266099b5..14da1cd11ef44358de91ebdfa05965b77208b9af 100644
--- a/pkg/compiler/lib/src/typechecker.dart
+++ b/pkg/compiler/lib/src/typechecker.dart
@@ -809,13 +809,8 @@ class TypeCheckerVisitor extends Visitor<ResolutionDartType> {
           if (memberName.isSimilarTo(member.name)) {
             PrivateName privateName = member.name;
             LibraryElement library = privateName.library;
-            reportMessage(
-                node,
-                MessageKind.PRIVATE_ACCESS,
-                {
-                  'name': name,
-                  'libraryName': library.libraryOrScriptName
-                },
+            reportMessage(node, MessageKind.PRIVATE_ACCESS,
+                {'name': name, 'libraryName': library.libraryOrScriptName},
                 isHint: isHint);
             foundPrivateMember = true;
           }