Set the target type when creating the request for main resource

Source/platform/exported/WebURLRequest.cpp

Index: Source/platform/exported/WebURLRequest.cpp
diff --git a/Source/platform/exported/WebURLRequest.cpp b/Source/platform/exported/WebURLRequest.cpp
index f74541315816c78cb0be49ab80c035cb613f5eae..a65887f97ee59c04d2edb656c4826b3c0ab109a3 100644
--- a/Source/platform/exported/WebURLRequest.cpp
+++ b/Source/platform/exported/WebURLRequest.cpp
@@ -71,6 +71,15 @@ public:
         m_resourceRequest = &m_resourceRequestAllocation;
     }
 
+    WebURLRequestPrivateImpl(const WebURL& url, bool isMainResource, bool isMainFrame)
+    {
+        if (isMainResource)
+            m_resourceRequestAllocation = ResourceRequest::createMainResourceRequest(url, isMainFrame);
+        else
+            m_resourceRequestAllocation.setURL(url);
+        m_resourceRequest = &m_resourceRequestAllocation;
+    }
+
     WebURLRequestPrivateImpl(const WebURLRequestPrivate* p)
         : m_resourceRequestAllocation(*p->m_resourceRequest)
     {
@@ -85,6 +94,12 @@ private:
     ResourceRequest m_resourceRequestAllocation;
 };
 
+WebURLRequest::WebURLRequest(const WebURL& url, bool isMainResource, bool isMainFrame)
+    : m_private(0)
+{
+    assign(new WebURLRequestPrivateImpl(url, isMainResource, isMainFrame));
+}
+
 void WebURLRequest::initialize()
 {
     assign(new WebURLRequestPrivateImpl());