Revert Implement <select> Popup Menu using PagePopup

Source/web/PopupMenuTest.cpp

Index: Source/web/PopupMenuTest.cpp
diff --git a/Source/web/PopupMenuTest.cpp b/Source/web/PopupMenuTest.cpp
index a80c37d02d78f66b03d0edc42b80317d75dfacab..ee9a0c1fdc43e6cc46ee602668f19460f2a7efd1 100644
--- a/Source/web/PopupMenuTest.cpp
+++ b/Source/web/PopupMenuTest.cpp
@@ -122,9 +122,6 @@ public:
     virtual bool itemIsSelected(unsigned listIndex) const { return listIndex == m_selectIndex; }
     virtual bool valueShouldChangeOnHotTrack() const { return false; }
     virtual void setTextFromItem(unsigned listIndex) { }
-    virtual IntRect elementRectRelativeToRootView() const override { return IntRect(); }
-    virtual Element& ownerElement() const override { return *toElement(m_node); }
-    virtual RenderStyle* renderStyleForItem(Element& element) const override { return nullptr; }
 
     virtual FontSelector* fontSelector() const { return 0; }
     virtual HostWindow* hostWindow() const { return 0; }
@@ -599,7 +596,6 @@ TEST_F(SelectPopupMenuStyleTest, DISABLED_PopupListBoxRTLRowWidth)
 TEST_F(SelectPopupMenuStyleTest, PopupListBoxRTLRowWidth)
 #endif
 {
-    RuntimeEnabledFeatures::setHTMLPopupMenuEnabled(false);
     registerMockedURLLoad("select_rtl_width.html");
     loadFrame(mainFrame(), "select_rtl_width.html");
     HTMLSelectElement* select = toHTMLSelectElement(mainFrame()->frame()->document()->focusedElement());