Set the target type when creating the request for main resource

Source/web/tests/FrameTestHelpers.cpp

Index: Source/web/tests/FrameTestHelpers.cpp
diff --git a/Source/web/tests/FrameTestHelpers.cpp b/Source/web/tests/FrameTestHelpers.cpp
index 0b4153c56a7ca1305404c15b3ca45d7b2d9a229f..f8b07b8990b3221456d3da33c7efa45085aa1e42 100644
--- a/Source/web/tests/FrameTestHelpers.cpp
+++ b/Source/web/tests/FrameTestHelpers.cpp
@@ -114,10 +114,11 @@ void pumpPendingRequests(WebFrame* frame)
 
 class LoadTask : public WebThread::Task {
 public:
-    LoadTask(WebFrame* frame, const WebURLRequest& request)
+    LoadTask(WebFrame* frame, WebURLRequest& request)
         : m_frame(frame)
         , m_request(request)
     {
+        m_request.initializeForMainResource(!m_frame->parent());
     }
 
     virtual void run() OVERRIDE
@@ -127,7 +128,7 @@ public:
 
 private:
     WebFrame* const m_frame;
-    const WebURLRequest m_request;
+    WebURLRequest m_request;
 };
 
 class LoadHTMLStringTask : public WebThread::Task {