Add support for URL.searchParams getter.

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

Index: third_party/WebKit/Source/core/dom/DOMURLUtils.h
diff --git a/third_party/WebKit/Source/core/dom/DOMURLUtils.h b/third_party/WebKit/Source/core/dom/DOMURLUtils.h
index 7bec3e035973667114c9b5192c5e4d6a3685045b..a46f8c461e7250d0d21f66290a4480c68eb0a239 100644
--- a/third_party/WebKit/Source/core/dom/DOMURLUtils.h
+++ b/third_party/WebKit/Source/core/dom/DOMURLUtils.h
@@ -39,7 +39,7 @@ class CORE_EXPORT DOMURLUtils : public DOMURLUtilsReadOnly {
 public:
     virtual void setURL(const KURL&) = 0;
     virtual void setInput(const String&) = 0;
-    ~DOMURLUtils() override { }
+    ~DOMURLUtils() override;
 
     void setHref(const String&);
 
@@ -50,8 +50,15 @@ public:
     void setHostname(const String&);
     void setPort(const String&);
     void setPathname(const String&);
-    void setSearch(const String&);
     void setHash(const String&);
+    virtual void setSearch(const String&);
+
+protected:
+    void setSearchInternal(const String&);
+
+    bool isInUpdate() const { return m_isInUpdate; }
+
+    bool m_isInUpdate = false;
 };
 
 } // namespace blink