Move LayoutMenuList's height calculation logic to styleDidChange method.

third_party/WebKit/Source/core/layout/LayoutMenuList.cpp

Index: third_party/WebKit/Source/core/layout/LayoutMenuList.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutMenuList.cpp b/third_party/WebKit/Source/core/layout/LayoutMenuList.cpp
index 04b1aec36161d85c16773f5a20dd9be33fd77105..a5e44c0a31269e73925e2c9a32f5cb23dcb53564 100644
--- a/third_party/WebKit/Source/core/layout/LayoutMenuList.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutMenuList.cpp
@@ -80,8 +80,6 @@ void LayoutMenuList::createInnerBlock()
 
     adjustInnerStyle();
     LayoutFlexibleBox::addChild(m_innerBlock);
-
-    m_innerBlockHeight = style()->getFontMetrics().height() + m_innerBlock->borderAndPaddingHeight();
 }
 
 void LayoutMenuList::adjustInnerStyle()
@@ -147,6 +145,12 @@ void LayoutMenuList::styleDidChange(StyleDifference diff, const ComputedStyle* o
 
     m_buttonText->setStyle(mutableStyle());
     adjustInnerStyle();
+    updateInnerBlockHeight();
+}
+
+void LayoutMenuList::updateInnerBlockHeight()
+{
+    m_innerBlockHeight = style()->getFontMetrics().height() + m_innerBlock->borderAndPaddingHeight();
 }
 
 void LayoutMenuList::updateOptionsWidth() const