Add Streams API support to XMLHttpRequest

LayoutTests/http/tests/xmlhttprequest/response-stream.html

Index: LayoutTests/http/tests/xmlhttprequest/response-stream.html
diff --git a/LayoutTests/http/tests/xmlhttprequest/response-json-and-readystate.html b/LayoutTests/http/tests/xmlhttprequest/response-stream.html
similarity index 62%
copy from LayoutTests/http/tests/xmlhttprequest/response-json-and-readystate.html
copy to LayoutTests/http/tests/xmlhttprequest/response-stream.html
index 2f97e3c3cc88c374bac0a7c8e29b79d783537c9e..cd445d978eff67faff671eab986e6486d30645be 100644
--- a/LayoutTests/http/tests/xmlhttprequest/response-json-and-readystate.html
+++ b/LayoutTests/http/tests/xmlhttprequest/response-stream.html
@@ -4,22 +4,24 @@
 <script src="../resources/testharness.js"></script>
 <script src="../resources/testharnessreport.js"></script>
 <script type="text/javascript">
-var test = async_test("Test response of XMLHttpRequest with responseType set to 'json' for various readyState.");
+var test = async_test("Test response of XMLHttpRequest with responseType set to 'stream' for various readyState.");
 
 test.step(function()
 {
     var xhr = new XMLHttpRequest;
 
-    xhr.responseType = "json";
-    assert_equals(xhr.responseType, "json", "xhr.responseType");
+    xhr.responseType = "stream";
+    assert_equals(xhr.responseType, "stream", "xhr.responseType");
 
     assert_equals(xhr.readyState, xhr.UNSENT, "xhr.readyState");
-    assert_equals(xhr.response, null, "xhr.response");
+    assert_equals(xhr.response, null, "xhr.response during UNSENT");
 
     var seenStates = [];
 
     xhr.onreadystatechange = test.step_func(function() {
-        seenStates.push(xhr.readyState);
+        // onreadystatechange can be invoked multiple times in LOADING state.
+        if (seenStates.length == 0 || xhr.readyState != seenStates[seenStates.length - 1])
+            seenStates.push(xhr.readyState);
 
         switch (xhr.readyState) {
         case xhr.UNSENT:
@@ -27,22 +29,19 @@ test.step(function()
             return;
 
         case xhr.OPENED:
-            assert_equals(xhr.response, null, "xhr.response");
+            assert_equals(xhr.response, null, "xhr.response during OPENED");
             return;
 
         case xhr.HEADERS_RECEIVED:
-            assert_equals(xhr.response, null, "xhr.response");
+            assert_equals(xhr.response, null, "xhr.response during HEADERS_RECEIVED");
             return;
 
         case xhr.LOADING:
-            assert_equals(xhr.response, null, "xhr.response");
+            assert_not_equals(xhr.response, null, "xhr.response during LOADING");
             return;
 
         case xhr.DONE:
             assert_equals(xhr.status, 200, "xhr.status");
-            assert_equals(JSON.stringify(xhr.response),
-                          '["a","b",2,{"3":3}]',
-                          "Stringify result of xhr.response");
 
             // Check that we saw all states.
             assert_array_equals(seenStates,
@@ -57,7 +56,7 @@ test.step(function()
         }
     });
 
-    xhr.open('GET', 'resources/test.json', true);
+    xhr.open('GET', '../resources/test.ogv', true);
     xhr.send();
 });
 </script>