Add support for URL.searchParams getter.

third_party/WebKit/Source/core/dom/DOMURL.h

Index: third_party/WebKit/Source/core/dom/DOMURL.h
diff --git a/third_party/WebKit/Source/core/dom/DOMURL.h b/third_party/WebKit/Source/core/dom/DOMURL.h
index a5d11bd2b95d7c62bae73337123f13c5df32aef2..89b2bad7b19d458654cf62e8e531e09c18756642 100644
--- a/third_party/WebKit/Source/core/dom/DOMURL.h
+++ b/third_party/WebKit/Source/core/dom/DOMURL.h
@@ -40,6 +40,7 @@ class Blob;
 class ExceptionState;
 class ExecutionContext;
 class URLRegistrable;
+class URLSearchParams;
 
 class DOMURL final : public GarbageCollectedFinalized<DOMURL>, public ScriptWrappable, public DOMURLUtils {
     DEFINE_WRAPPERTYPEINFO();
@@ -48,6 +49,7 @@ public:
     {
         return new DOMURL(url, blankURL(), exceptionState);
     }
+
     static DOMURL* create(const String& url, const String& base, ExceptionState& exceptionState)
     {
         return new DOMURL(url, KURL(KURL(), base), exceptionState);
@@ -65,13 +67,22 @@ public:
     String input() const override { return m_input; }
     void setInput(const String&) override;
 
-    DEFINE_INLINE_TRACE() { }
+    void setSearch(const String&) override;
+
+    URLSearchParams* searchParams();
+
+    DECLARE_VIRTUAL_TRACE();
 
 private:
+    friend class URLSearchParams;
     DOMURL(const String& url, const KURL& base, ExceptionState&);
 
+    void update();
+    void updateSearchParams(const String&);
+
     KURL m_url;
     String m_input;
+    WeakMember<URLSearchParams> m_searchParams;
 };
 
 } // namespace blink