Implement URLSearchParams.

Source/core/html/HTMLAnchorElement.cpp

Index: Source/core/html/HTMLAnchorElement.cpp
diff --git a/Source/core/html/HTMLAnchorElement.cpp b/Source/core/html/HTMLAnchorElement.cpp
index 8aa7f7eac91f6f2094d75822d3579fb6c6128a9e..42a790e29d55d34074ff40718854c1dcf01e681f 100644
--- a/Source/core/html/HTMLAnchorElement.cpp
+++ b/Source/core/html/HTMLAnchorElement.cpp
@@ -247,6 +247,7 @@ KURL HTMLAnchorElement::href() const
 void HTMLAnchorElement::setHref(const AtomicString& value)
 {
     setAttribute(hrefAttr, value);
+    DOMURLUtils::update();
 }
 
 KURL HTMLAnchorElement::url() const
@@ -386,4 +387,10 @@ Node::InsertionNotificationRequest HTMLAnchorElement::insertedInto(ContainerNode
     return HTMLElement::insertedInto(insertionPoint);
 }
 
+void HTMLAnchorElement::trace(Visitor* visitor)
+{
+    DOMURLUtils::trace(visitor);
+    HTMLElement::trace(visitor);
+}
+
 }