# HG changeset patch
# Parent 0e44920c4e5e697f86e0a42b909c5a032d70a1a4
diff --git a/content/canvas/test/webgl/resources/webgl-test-harness.js b/content/canvas/test/webgl/resources/webgl-test-harness.js
--- a/content/canvas/test/webgl/resources/webgl-test-harness.js
+++ b/content/canvas/test/webgl/resources/webgl-test-harness.js
@@ -90,190 +90,105 @@ var log = function(msg) {
   if (window.console && window.console.log) {
     window.console.log(msg);
   }
 };
 
 /**
  * Loads text from an external file. This function is synchronous.
  * @param {string} url The url of the external file.
- * @param {!function(bool, string): void} callback that is sent a bool for
- *     success and the string.
+ * @return {string} the loaded text if the request is synchronous.
  */
-var loadTextFileAsynchronous = function(url, callback) {
-  log ("loading: " + url);
+var loadTextFileSynchronous = function(url) {
   var error = 'loadTextFileSynchronous failed to load url "' + url + '"';
   var request;
   if (window.XMLHttpRequest) {
     request = new XMLHttpRequest();
     if (request.overrideMimeType) {
       request.overrideMimeType('text/plain');
     }
   } else {
     throw 'XMLHttpRequest is disabled';
   }
-  try {
-    request.open('GET', url, true);
-    request.onreadystatechange = function() {
-      if (request.readyState == 4) {
-        var text = '';
-        // HTTP reports success with a 200 status. The file protocol reports
-        // success with zero. HTTP does not use zero as a status code (they
-        // start at 100).
-        // https://developer.mozilla.org/En/Using_XMLHttpRequest
-        var success = request.status == 200 || request.status == 0;
-        if (success) {
-          text = request.responseText;
-        }
-        log("loaded: " + url);
-        callback(success, text);
-      }
-    };
-    request.send(null);
-  } catch (e) {
-    log("failed to load: " + url);
-    callback(false, '');
+  request.open('GET', url, false);
+  request.send(null);
+  if (request.readyState != 4) {
+    throw error;
   }
+  return request.responseText;
 };
 
-var getFileList = function(url, callback) {
+var getFileList = function(url) {
   var files = [];
-
-  var getFileListImpl = function(url, callback) {
-    var files = [];
-    if (url.substr(url.length - 4) == '.txt') {
-      loadTextFileAsynchronous(url, function() {
-        return function(success, text) {
-          if (!success) {
-            callback(false, '');
-            return;
-          }
-          var lines = text.split('\n');
-          var prefix = '';
-          var lastSlash = url.lastIndexOf('/');
-          if (lastSlash >= 0) {
-            prefix = url.substr(0, lastSlash + 1);
-          }
-          var fail = false;
-          var count = 1;
-          var index = 0;
-          for (var ii = 0; ii < lines.length; ++ii) {
-            var str = lines[ii].replace(/^\s\s*/, '').replace(/\s\s*$/, '');
-            if (str.length > 4 &&
-                str[0] != '#' &&
-                str[0] != ";" &&
-                str.substr(0, 2) != "//") {
-              new_url = prefix + str;
-              ++count;
-              getFileListImpl(new_url, function(index) {
-                return function(success, new_files) {
-                  log("got files: " + new_files.length);
-                  if (success) {
-                    files[index] = new_files;
-                  }
-                  finish(success);
-                };
-              }(index++));
-            }
-          }
-          finish(true);
-
-          function finish(success) {
-            if (!success) {
-              fail = true;
-            }
-            --count;
-            log("count: " + count);
-            if (!count) {
-              callback(!fail, files);
-            }
-          }
-        }
-      }());
-
-    } else {
-      files.push(url);
-      callback(true, files);
+  if (url.substr(url.length - 4) == '.txt') {
+    var lines = loadTextFileSynchronous(url).split('\n');
+    var prefix = '';
+    var lastSlash = url.lastIndexOf('/');
+    if (lastSlash >= 0) {
+      prefix = url.substr(0, lastSlash + 1);
     }
-  };
-
-  getFileListImpl(url, function(success, files) {
-    // flatten
-    var flat = [];
-    flatten(files);
-    function flatten(files) {
-      for (var ii = 0; ii < files.length; ++ii) {
-        var value = files[ii];
-        if (typeof(value) == "string") {
-          flat.push(value);
-        } else {
-          flatten(value);
-        }
+    for (var ii = 0; ii < lines.length; ++ii) {
+      var str = lines[ii].replace(/^\s\s*/, '').replace(/\s\s*$/, '');
+      if (str.length > 4 &&
+          str[0] != '#' &&
+          str[0] != ";" &&
+          str.substr(0, 2) != "//") {
+        new_url = prefix + str;
+        files = files.concat(getFileList(new_url));
       }
     }
-    callback(success, flat);
-  });
-};
+  } else {
+    files.push(url);
+  }
+  return files;
+}
 
 var TestFile = function(url) {
   this.url = url;
 };
 
 var TestHarness = function(iframe, filelistUrl, reportFunc) {
   this.window = window;
   this.iframe = iframe;
   this.reportFunc = reportFunc;
-  this.timeoutDelay = 20000;
-  this.files = [];
-
-  var that = this;
-  getFileList(filelistUrl, function() {
-    return function(success, files) {
-      that.addFiles_(success, files);
-    };
-  }());
-
-};
-
-TestHarness.reportType = {
-  ADD_PAGE: 1,
-  READY: 2,
-  START_PAGE: 3,
-  TEST_RESULT: 4,
-  FINISH_PAGE: 5,
-  FINISHED_ALL_TESTS: 6
-};
-
-TestHarness.prototype.addFiles_ = function(success, files) {
-  if (!success) {
+  try {
+    var files = getFileList(filelistUrl);
+  } catch (e) {
     this.reportFunc(
         TestHarness.reportType.FINISHED_ALL_TESTS,
         'Unable to load tests. Are you running locally?\n' +
         'You need to run from a server or configure your\n' +
         'browser to allow access to local files (not recommended).\n\n' +
         'Note: An easy way to run from a server:\n\n' +
         '\tcd path_to_tests\n' +
         '\tpython -m SimpleHTTPServer\n\n' +
         'then point your browser to ' +
           '<a href="http://localhost:8000/webgl-conformance-tests.html">' +
           'http://localhost:8000/webgl-conformance-tests.html</a>',
         false)
     return;
   }
-  log("total files: " + files.length);
+  this.files = [];
   for (var ii = 0; ii < files.length; ++ii) {
-    log("" + ii + ": " + files[ii]);
     this.files.push(new TestFile(files[ii]));
     this.reportFunc(TestHarness.reportType.ADD_PAGE, files[ii], undefined);
   }
-  this.reportFunc(TestHarness.reportType.READY, undefined, undefined);
   this.nextFileIndex = files.length;
   this.lastFileIndex = files.length;
+  this.timeoutDelay = 20000;
 }
 
+TestHarness.reportType = {
+  ADD_PAGE: 1,
+  START_PAGE: 2,
+  TEST_RESULT: 3,
+  FINISH_PAGE: 4,
+  FINISHED_ALL_TESTS: 5
+};
+
 TestHarness.prototype.runTests = function(opt_start, opt_count) {
   var count = opt_count || this.files.length;
   this.nextFileIndex = opt_start || 0;
   this.lastFileIndex = this.nextFileIndex + count;
   this.startNextFile();
 };
 
 TestHarness.prototype.setTimeout = function() {