First step of HTMLImports

Source/core/html/LinkRelAttribute.h

Index: Source/core/html/LinkRelAttribute.h
diff --git a/Source/core/html/LinkRelAttribute.h b/Source/core/html/LinkRelAttribute.h
index 1856fc42efd4dc750b2136c3a15f094229013e18..009210885b4514a341233ab3dd31e03ee9fe9d57 100644
--- a/Source/core/html/LinkRelAttribute.h
+++ b/Source/core/html/LinkRelAttribute.h
@@ -48,16 +48,17 @@ public:
     bool isLinkPrefetch() const { return m_isLinkPrefetch; }
     bool isLinkSubresource() const { return m_isLinkSubresource; }
     bool isLinkPrerender() const { return m_isLinkPrerender; }
+    bool isImport() const { return m_isImport; }
 
 private:
-    bool m_isStyleSheet;
     IconType m_iconType;
-    bool m_isAlternate;
-    bool m_isDNSPrefetch;
-    bool m_isLinkPrefetch;
-    bool m_isLinkSubresource;
-    bool m_isLinkPrerender;
-
+    bool m_isStyleSheet : 1;
+    bool m_isAlternate : 1;
+    bool m_isDNSPrefetch : 1;
+    bool m_isLinkPrefetch : 1;
+    bool m_isLinkSubresource : 1;
+    bool m_isLinkPrerender : 1;
+    bool m_isImport : 1;
 };
     
 }