Updated UploadProgress tests under ThreadSanitizer

content/test/data/loader/async_resource_handler.html

Index: content/test/data/loader/async_resource_handler.html
diff --git a/content/test/data/loader/async_resource_handler.html b/content/test/data/loader/async_resource_handler.html
index 0af609dc0272c89a196d837b95178cc8449645e9..5d34ea7f4793761a9ff32f384d27087ed74b0778 100644
--- a/content/test/data/loader/async_resource_handler.html
+++ b/content/test/data/loader/async_resource_handler.html
@@ -8,11 +8,14 @@ var asyncXHR;
 var lastSeenProgress = 0;
 // Build a long string, fast.
 // data.length = 2 * 3^15 = 28697814
-
+var sent_data;
+var smaller_data;
 var data = 'yo';
 var iterations = 15;
 for (var i = 0; i < iterations; i++) {
   data = data + data + data;
+  if (i === 13)
+    smaller_data = data;
 }
 
 function sendResults(failures) {
@@ -30,7 +33,7 @@ function progressListener(e) {
     failureList.push('Progress event occurred after load event.');
   if (progress <= lastSeenProgress)
     failureList.push('No forward upload progress between events.');
-  if (e.total != data.length)
+  if (e.total != sent_data.length)
     failureList.push('Upload total does not match payload size.');
   if (progress > e.total)
     failureList.push('Upload progress exceeds payload size.');
@@ -50,7 +53,7 @@ function onFinished(e) {
   var failureList = [];
   if (!ranProgressHandler)
     failureList.push('Finished upload without firing a progress event.');
-  if (lastSeenProgress != data.length)
+  if (lastSeenProgress != sent_data.length)
     failureList.push('Final progress event before data transfer completed.');
   if (this.responseText != 'hello') {
     failureList.push(
@@ -63,7 +66,7 @@ function onError(e) {
   sendResults(['Received an XHR error event.']);
 }
 
-function WaitForAsyncXHR(url) {
+function WaitForAsyncXHR(url, data_size) {
   asyncXHR = new XMLHttpRequest();
   asyncXHR.addEventListener('load', onFinished);
   asyncXHR.addEventListener('error', onError);
@@ -74,7 +77,11 @@ function WaitForAsyncXHR(url) {
   asyncXHR.open('POST', url, true);
 
   asyncXHR.setRequestHeader('Content-Type', 'text/plain');
-  asyncXHR.send(data);
+  if (data_size === "small")
+    sent_data = smaller_data;
+  else if (data_size === "large")
+    sent_data = data;
+  asyncXHR.send(sent_data);
 }
 </script>
 </head>