Set the target type when creating the request for main resource

Source/platform/network/ResourceRequest.h

Index: Source/platform/network/ResourceRequest.h
diff --git a/Source/platform/network/ResourceRequest.h b/Source/platform/network/ResourceRequest.h
index cb1e7c5a304ac3ff2ce127a54be4f5134dc570e2..469ec5761c39e1ad760df1ce88eeab3c9e615b0f 100644
--- a/Source/platform/network/ResourceRequest.h
+++ b/Source/platform/network/ResourceRequest.h
@@ -93,10 +93,19 @@ public:
         initialize(url, UseProtocolCachePolicy);
     }
 
-    ResourceRequest(const KURL& url, const Referrer& referrer, ResourceRequestCachePolicy cachePolicy = UseProtocolCachePolicy)
+    // This constructor should only be used for main resources ResourceRequests.
+    ResourceRequest(const KURL& url, bool isMainFrame)
+    {
+        initialize(url, UseProtocolCachePolicy);
+        setTargetTypeForMainResource(isMainFrame);
+    }
+
+    // This constructor should only be used for main resources ResourceRequests.
+    ResourceRequest(const KURL& url, bool isMainFrame, const Referrer& referrer, ResourceRequestCachePolicy cachePolicy = UseProtocolCachePolicy)
     {
         initialize(url, cachePolicy);
         setHTTPReferrer(referrer);
+        setTargetTypeForMainResource(isMainFrame);
     }
 
     static PassOwnPtr<ResourceRequest> adopt(PassOwnPtr<CrossThreadResourceRequestData>);
@@ -217,6 +226,8 @@ public:
 private:
     void initialize(const KURL& url, ResourceRequestCachePolicy cachePolicy);
 
+    void setTargetTypeForMainResource(bool isMainFrame);
+
     const CacheControlHeader& cacheControlHeader() const;
 
     KURL m_url;