Add cross-origin test with credentials.

tools/testing/dart/test_suite.dart

Index: tools/testing/dart/test_suite.dart
diff --git a/tools/testing/dart/test_suite.dart b/tools/testing/dart/test_suite.dart
index 4d0447275815800715b575d2e178214739be9c54..2302b2c7ab1b01f4b70569101014371f29f9abdb 100644
--- a/tools/testing/dart/test_suite.dart
+++ b/tools/testing/dart/test_suite.dart
@@ -384,11 +384,17 @@ class StandardTestSuite extends TestSuite {
   final Path dartDir;
   Predicate<String> isTestFilePredicate;
   final bool listRecursively;
+  /**
+   * The set of servers that have been started to run these tests (Could be
+   * none).
+   */
+  List serverList;
 
   StandardTestSuite(Map configuration,
                     String suiteName,
                     Path suiteDirectory,
                     this.statusFilePaths,
+                    this.serverList,
                     {this.isTestFilePredicate,
                     bool recursive: false})
   : super(configuration, suiteName),
@@ -422,14 +428,18 @@ class StandardTestSuite extends TestSuite {
    * instead of having to create a custom [StandardTestSuite] subclass. In
    * particular, if you add 'path/to/mytestsuite' to [TEST_SUITE_DIRECTORIES]
    * in test.dart, this will all be set up for you.
+   *
+   * The [StandardTestSuite] also optionally takes a list of servers that have
+   * been started up by the test harness, to be used by browser tests.
    */
   factory StandardTestSuite.forDirectory(
-      Map configuration, Path directory) {
+      Map configuration, Path directory, [List serverList=const []]) {
     final name = directory.filename;
 
     return new StandardTestSuite(configuration,
         name, directory,
         ['$directory/$name.status', '$directory/${name}_dart2js.status'],
+        serverList,
         isTestFilePredicate: (filename) => filename.endsWith('_test.dart'),
         recursive: true);
   }
@@ -704,7 +714,7 @@ class StandardTestSuite extends TestSuite {
       String tempDir = createOutputDirectory(info.filePath, '');
       args.add('--out=$tempDir/out.js');
 
-       List<Command> commands = 
+       List<Command> commands =
            <Command>[new CompilationCommand("$tempDir/out.js",
                                             !useDart2JsFromSdk,
                                             dart2JsBootstrapDependencies,
@@ -862,12 +872,6 @@ class StandardTestSuite extends TestSuite {
           dartWrapperFilename : compiledDartWrapperFilename;
       // Create the HTML file for the test.
       RandomAccessFile htmlTest = new File(htmlPath).openSync(FileMode.WRITE);
-      String filePrefix = '';
-      if (Platform.operatingSystem == 'windows') {
-        // Firefox on Windows does not like absolute file path names that start
-        // with 'C:' adding 'file:///' solves the problem.
-        filePrefix = 'file:///';
-      }
       String content = null;
       Path dir = filePath.directoryPath;
       String nameNoExt = filePath.filenameWithoutExtension;
@@ -876,10 +880,10 @@ class StandardTestSuite extends TestSuite {
       Path expectedOutput = null;
       if (new File.fromPath(pngPath).existsSync()) {
         expectedOutput = pngPath;
-        content = getHtmlLayoutContents(scriptType, '$filePrefix$scriptPath');
+        content = getHtmlLayoutContents(scriptType, '$scriptPath');
       } else if (new File.fromPath(txtPath).existsSync()) {
         expectedOutput = txtPath;
-        content = getHtmlLayoutContents(scriptType, '$filePrefix$scriptPath');
+        content = getHtmlLayoutContents(scriptType, '$scriptPath');
       } else {
         final htmlLocation = new Path.fromNative(htmlPath);
         content = getHtmlContents(
@@ -922,17 +926,22 @@ class StandardTestSuite extends TestSuite {
       do {
         List<Command> commandSet = new List<Command>.from(commands);
         if (subtestIndex != 0) {
-          // NOTE: The first time we enter this loop, all the compilation 
-          // commands will be executed. On subsequent loop iterations, we 
+          // NOTE: The first time we enter this loop, all the compilation
+          // commands will be executed. On subsequent loop iterations, we
           // don't need to do any compilations. Thus we set "commandSet = []".
           commandSet = [];
         }
 
         List<String> args = <String>[];
-        String fullHtmlPath = htmlPath.startsWith('http:') ? htmlPath :
-            (htmlPath.startsWith('/') ?
-             'file://$htmlPath' :
-             'file:///$htmlPath');
+        var basePath = TestUtils.dartDir().toString();
+        htmlPath = htmlPath.startsWith(basePath) ?
+            htmlPath.substring(basePath.length) : htmlPath;
+        String fullHtmlPath = htmlPath;
+        if (!htmlPath.startsWith('http')) {
+          if (htmlPath.startsWith('/')) htmlPath = '/$htmlPath';
+          fullHtmlPath = 'http://127.0.0.1:${serverList[0].port}$htmlPath?'
+              'crossOriginPort=${serverList[1].port}';
+        }
         if (info.optionsFromFile['isMultiHtmlTest']
             && subtestNames.length > 0) {
           fullHtmlPath = '${fullHtmlPath}#${subtestNames[subtestIndex]}';
@@ -971,7 +980,7 @@ class StandardTestSuite extends TestSuite {
           if (compiler == 'none') {
             var packageRootPath = packageRoot(optionsFromFile['packageRoot']);
             if (packageRootPath != null) {
-              var absolutePath = 
+              var absolutePath =
                   TestUtils.absolutePath(new Path(packageRootPath));
               packageRootUri = new Uri.fromComponents(
                   scheme: 'file',