Implement <select> Popup Menu using PagePopup

Source/core/dom/StyleEngine.h

Index: Source/core/dom/StyleEngine.h
diff --git a/Source/core/dom/StyleEngine.h b/Source/core/dom/StyleEngine.h
index dced16687ecd062760bcf441b8fb934127432543..c7435e597c139e3ece5abdfdc8efa2a55934a3c9 100644
--- a/Source/core/dom/StyleEngine.h
+++ b/Source/core/dom/StyleEngine.h
@@ -28,6 +28,7 @@
 #ifndef StyleEngine_h
 #define StyleEngine_h
 
+#include "core/css/CSSFontSelector.h"
 #include "core/css/CSSFontSelectorClient.h"
 #include "core/css/resolver/StyleResolver.h"
 #include "core/dom/Document.h"
@@ -43,7 +44,6 @@
 
 namespace blink {
 
-class CSSFontSelector;
 class CSSStyleSheet;
 class Node;
 class RuleFeatureSet;
@@ -152,6 +152,8 @@ public:
     void clearMasterResolver();
 
     CSSFontSelector* fontSelector() { return m_fontSelector.get(); }
+    void setFontSelector(PassRefPtrWillBeRawPtr<CSSFontSelector> fontSelector) { m_fontSelector = fontSelector; }
+
     void removeFontFaceRules(const WillBeHeapVector<RawPtrWillBeMember<const StyleRuleFontFace> >&);
     void clearFontCache();
     // updateGenericFontFamilySettings is used from WebSettingsImpl.