Revert of [XMLHttpRequest] Stop throwing for network error in async mode

LayoutTests/fast/files/apply-blob-url-to-xhr.html

Index: LayoutTests/fast/files/apply-blob-url-to-xhr.html
diff --git a/LayoutTests/fast/files/apply-blob-url-to-xhr.html b/LayoutTests/fast/files/apply-blob-url-to-xhr.html
index a00418f031c5dcd7e8ecc7863f1a934b5cf96d96..7b9eda17ce460d116dfac7af42a9a4b13bce571a 100644
--- a/LayoutTests/fast/files/apply-blob-url-to-xhr.html
+++ b/LayoutTests/fast/files/apply-blob-url-to-xhr.html
@@ -4,13 +4,43 @@
 <input type="file" name="file" id="file" onchange="onInputFileChange()">
 <pre id='console'></pre>
 
-<script src="resources/apply-blob-url-to-xhr.js"></script>
 <script>
+function log(message)
+{
+    document.getElementById('console').appendChild(document.createTextNode(message + "\n"));
+}
+
+function sendXMLHttpRequest(method, url)
+{
+    var xhr = new XMLHttpRequest();
+    xhr.open(method, url, false);
+    try {
+        xhr.send();
+        log("Status: " + xhr.status);
+        log("Response: " + xhr.responseText);
+    } catch (error) {
+        log("Received exception, code: " + error.code + ", name: " + error.name + ", message: " + error.message);
+    }
+}
+
 function onInputFileChange()
 {
     var file = document.getElementById("file").files[0];
+    var fileURL = window.URL.createObjectURL(file);
 
-    runXHRs(file);
+    log("Test that XMLHttpRequest GET succeeds.");
+    sendXMLHttpRequest("GET", fileURL);
+
+    log("Test that XMLHttpRequest POST fails.");
+    sendXMLHttpRequest("POST", fileURL);
+
+    log("Test that XMLHttpRequest GET fails after the blob URL is revoked.");
+    window.URL.revokeObjectURL(fileURL);
+    sendXMLHttpRequest("GET", fileURL);
+
+    log("DONE");
+    if (testRunner.notifyDone)
+        testRunner.notifyDone();
 }
 
 function runTests()