Implement URLSearchParams.

Source/core/dom/DOMURLUtils.h

Index: Source/core/dom/DOMURLUtils.h
diff --git a/Source/core/dom/DOMURLUtils.h b/Source/core/dom/DOMURLUtils.h
index 1987ecd72054e349d44a522bd9b4a50143f0e906..966ab1d97fff6a7800094b89637ef9686635a701 100644
--- a/Source/core/dom/DOMURLUtils.h
+++ b/Source/core/dom/DOMURLUtils.h
@@ -27,8 +27,10 @@
 #ifndef DOMURLUtils_h
 #define DOMURLUtils_h
 
+#include "core/dom/DOMURLSearchParams.h"
 #include "core/dom/DOMURLUtilsReadOnly.h"
 #include "wtf/Forward.h"
+#include "wtf/RefPtr.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
@@ -39,7 +41,7 @@ class DOMURLUtils : public DOMURLUtilsReadOnly {
 public:
     virtual void setURL(const KURL&) = 0;
     virtual void setInput(const String&) = 0;
-    virtual ~DOMURLUtils() { };
+    virtual ~DOMURLUtils();
 
     static void setHref(DOMURLUtils*, const String&);
 
@@ -52,6 +54,15 @@ public:
     static void setPathname(DOMURLUtils*, const String&);
     static void setSearch(DOMURLUtils*, const String&);
     static void setHash(DOMURLUtils*, const String&);
+
+    static PassRefPtr<DOMURLSearchParams> searchParams(DOMURLUtils*, bool&);
+    static void setSearchParams(DOMURLUtils*, const String&);
+    static void setSearchParams(DOMURLUtils*, PassRefPtr<DOMURLSearchParams>);
+
+    static void update(DOMURLUtils*);
+
+protected:
+    RefPtr<DOMURLSearchParams> m_searchParams;
 };
 
 } // namespace WebCore