Merge "Menulist SELECT element should update layout when an OPTION content is changed." to M52.

third_party/WebKit/Source/core/html/HTMLSelectElement.cpp

Index: third_party/WebKit/Source/core/html/HTMLSelectElement.cpp
diff --git a/third_party/WebKit/Source/core/html/HTMLSelectElement.cpp b/third_party/WebKit/Source/core/html/HTMLSelectElement.cpp
index 67bb08c09354bb63a024dfadcdcd636f2ca27cb7..b8568e0f8846e8e88bb2d9f3d6b339bdd37880d9 100644
--- a/third_party/WebKit/Source/core/html/HTMLSelectElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLSelectElement.cpp
@@ -431,12 +431,14 @@ void HTMLSelectElement::childrenChanged(const ChildrenChange& change)
     HTMLFormControlElementWithState::childrenChanged(change);
 }
 
-void HTMLSelectElement::optionElementChildrenChanged()
+void HTMLSelectElement::optionElementChildrenChanged(const HTMLOptionElement& option)
 {
     setNeedsValidityCheck();
     setOptionsChangedOnLayoutObject();
 
     if (layoutObject()) {
+        if (option.selected() && usesMenuList())
+            layoutObject()->updateFromElement();
         if (AXObjectCache* cache = layoutObject()->document().existingAXObjectCache())
             cache->childrenChanged(this);
     }