Fix issue on <select> style change when popup is visible

Source/core/html/forms/PopupMenuClient.h

Index: Source/core/html/forms/PopupMenuClient.h
diff --git a/Source/core/html/forms/PopupMenuClient.h b/Source/core/html/forms/PopupMenuClient.h
index 8c8a5d958fba5b93d3e8aedc0b2d7999591c974d..ffbd645dc7519bf77801d864d2002692983952e4 100644
--- a/Source/core/html/forms/PopupMenuClient.h
+++ b/Source/core/html/forms/PopupMenuClient.h
@@ -51,10 +51,13 @@ public:
     virtual int listSize() const = 0;
     virtual int selectedIndex() const = 0;
     virtual void popupDidHide() = 0;
+    // A popup is canceled when the popup was hidden without selecting an item.
+    virtual void popupDidCancel() = 0;
     virtual bool itemIsSeparator(unsigned listIndex) const = 0;
     virtual bool itemIsLabel(unsigned listIndex) const = 0;
     virtual bool itemIsSelected(unsigned listIndex) const = 0;
-    virtual void setTextFromItem(unsigned listIndex) = 0;
+    // Provisional selection is a selection made using arrow keys or type ahead.
+    virtual void provisionalSelectionChanged(unsigned) = 0;
     virtual IntRect elementRectRelativeToViewport() const = 0;
     virtual Element& ownerElement() const = 0;
     virtual const ComputedStyle* computedStyleForItem(Element&) const = 0;