Handle most qualified sends.

tests/compiler/dart2js/semantic_visitor_test.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library dart2js.semantics_visitor_test;
 
 import 'dart:async';
 import 'dart:mirrors';
 import 'package:async_helper/async_helper.dart';
 import 'package:expect/expect.dart';
@@ skipping 321 matching lines @@
           compiler.withCurrentElement(resolvedAst.element, () {
             //print(resolvedAst.node.toDebugString());
             resolvedAst.node.accept(visitor);
           });
         } catch (e, s) {
           Expect.fail("$e:\n$s\nIn test:\n"
                       "${library.compilationUnit.script.text}");
         }
         Expect.listEquals(expectedVisits, visitor.visits,
             "In test:\n"
-            "${library.compilationUnit.script.text}");
+            "${library.compilationUnit.script.text}\n\n"
+            "Expected: $expectedVisits\n"
+            "Found: ${visitor.visits}");
         unvisitedKinds.removeAll(visitor.visits.map((visit) => visit.method));
       }
       if (element.isAbstractField) {
         AbstractFieldElement abstractFieldElement = element;
         if (abstractFieldElement.getter != null) {
           testAstElement(abstractFieldElement.getter);
         } else if (abstractFieldElement.setter != null) {
           testAstElement(abstractFieldElement.setter);
         }
       } else {
@@ skipping 342 matching lines @@
   VISIT_IF_NOT_NULL_DYNAMIC_PROPERTY_PREFIX,
   VISIT_IF_NOT_NULL_DYNAMIC_PROPERTY_POSTFIX,
 
   ERROR_INVALID_ASSERT,
   ERROR_UNDEFINED_UNARY_EXPRESSION,
   ERROR_UNDEFINED_BINARY_EXPRESSION,
 
   VISIT_CONSTANT_GET,
   VISIT_CONSTANT_INVOKE,
 }