Fix webkit_unit_tests to use the threaded parser and enable everywhere.

Source/web/tests/PageSerializerTest.cpp

Index: Source/web/tests/PageSerializerTest.cpp
diff --git a/Source/web/tests/PageSerializerTest.cpp b/Source/web/tests/PageSerializerTest.cpp
index 99c91fe827f64f409e5184ce8869d36aee519842..7b0f0c198195b57ca4d178f38fc8831e232ca738 100644
--- a/Source/web/tests/PageSerializerTest.cpp
+++ b/Source/web/tests/PageSerializerTest.cpp
@@ -50,7 +50,6 @@
 
 using namespace WebCore;
 using namespace blink;
-using blink::FrameTestHelpers::runPendingTasks;
 using blink::URLTestHelpers::toKURL;
 using blink::URLTestHelpers::registerMockedURLLoad;
 
@@ -107,17 +106,7 @@ protected:
 
     void serialize(const char* url)
     {
-        WebURLRequest urlRequest;
-        urlRequest.initialize();
-        urlRequest.setURL(KURL(m_baseUrl, url));
-        m_helper.webView()->mainFrame()->loadRequest(urlRequest);
-        // Make sure any pending request get served.
-        Platform::current()->unitTestSupport()->serveAsynchronousMockedRequests();
-        // Some requests get delayed, run the timer.
-        runPendingTasks();
-        // Server the delayed resources.
-        Platform::current()->unitTestSupport()->serveAsynchronousMockedRequests();
-
+        FrameTestHelpers::loadFrame(m_helper.webView()->mainFrame(), KURL(m_baseUrl, url).string().utf8().data());
         PageSerializer serializer(&m_resources);
         serializer.serialize(m_helper.webViewImpl()->mainFrameImpl()->frame()->page());
     }