Remove unsafe getFontMetrics methods

third_party/WebKit/Source/web/ExternalPopupMenu.cpp

Index: third_party/WebKit/Source/web/ExternalPopupMenu.cpp
diff --git a/third_party/WebKit/Source/web/ExternalPopupMenu.cpp b/third_party/WebKit/Source/web/ExternalPopupMenu.cpp
index 7f397c2da8b95f213994e4bc5e15eb8307b554d9..70ea218ae0d8df4a61f6f863981b20e21f900047 100644
--- a/third_party/WebKit/Source/web/ExternalPopupMenu.cpp
+++ b/third_party/WebKit/Source/web/ExternalPopupMenu.cpp
@@ -258,7 +258,9 @@ void ExternalPopupMenu::getPopupMenuInfo(WebPopupMenuInfo& info,
   const ComputedStyle& menuStyle = ownerElement.computedStyle()
                                        ? *ownerElement.computedStyle()
                                        : *ownerElement.ensureComputedStyle();
-  info.itemHeight = menuStyle.font().getFontMetrics().height();
+  const SimpleFontData* fontData = menuStyle.font().primaryFont();
+  DCHECK(fontData);
+  info.itemHeight = fontData ? fontData->getFontMetrics().height() : 0;
   info.itemFontSize =
       static_cast<int>(menuStyle.font().getFontDescription().computedSize());
   info.selectedIndex = toExternalPopupMenuItemIndex(