Move Windows build output from //build to //out

tools/testing/dart/test_suite.dart

 // Copyright (c) 2012, 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.
 
 /**
  * Classes and methods for enumerating and preparing tests.
  *
  * This library includes:
  *
  * - Creating tests by listing all the Dart files in certain directories,
@@ skipping 2217 matching lines @@
   static Path absolutePath(Path path) {
     if (!path.isAbsolute) {
       return currentWorkingDirectory.join(path);
     }
     return path;
   }
 
   static String outputDir(Map configuration) {
     var result = '';
     var system = configuration['system'];
-    if (system == 'linux' || system == 'android') {
+    if (system == 'linux' || system == 'android' || system == 'windows') {
       result = 'out/';
     } else if (system == 'macos') {
       result = 'xcodebuild/';
-    } else if (system == 'windows') {
-      result = 'build/';
     } else {
       throw new Exception('Unknown operating system: "$system"');
     }
     return result;
   }
 
   static List<String> standardOptions(Map configuration) {
     List args = ["--ignore-unrecognized-flags"];
     String compiler = configuration["compiler"];
     if (compiler == "dart2js") {
@@ skipping 200 matching lines @@
       for (var key in PATH_REPLACEMENTS.keys) {
         if (path.startsWith(key)) {
           path = path.replaceFirst(key, PATH_REPLACEMENTS[key]);
           break;
         }
       }
     }
     return path;
   }
 }