Various clean up.

dart/tests/try/poi/compiler_test_case.dart

 // Copyright (c) 2014, 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.
 
 // Helper class for writing compiler tests.
 library trydart.compiler_test_case;
 
 import 'dart:async' show
     Future;
 
@@ skipping 41 matching lines @@
   final MockCompiler compiler;
 
   CompilerTestCase.init(this.source, this.scriptUri, this.compiler);
 
   CompilerTestCase.intermediate(String source, Uri scriptUri)
       : this.init(source, scriptUri, compilerFor(source, scriptUri));
 
   CompilerTestCase(String source, [String path])
       : this.intermediate(source, customUri(path == null ? 'main.dart' : path));
 
-  Future<LibraryElement> get mainApp {
+  Future<LibraryElement> loadMainApp() {
     return compiler.libraryLoader.loadLibrary(scriptUri)
         .then((LibraryElement library) {
           if (compiler.mainApp == null) {
             compiler.mainApp = library;
           } else if (compiler.mainApp != library) {
             throw
                 "Inconsistent use of compiler"
                 " (${compiler.mainApp} != $library).";
           }
           return library;
         });
   }
 
   Future run();
 
   /// Returns a future for the mainApp after running the compiler.
   Future<LibraryElement> compile() {
-    return mainApp.then((LibraryElement library) {
+    return loadMainApp().then((LibraryElement library) {
       return compiler.runCompiler(scriptUri).then((_) => library);
     });
   }
 
   String toString() => source;
 }