Remove unsafe getFontMetrics methods

third_party/WebKit/Source/web/ExternalPopupMenu.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 240 matching lines @@
     }
     popupItem.enabled = !itemElement.isDisabledFormControl();
     const ComputedStyle& style = *ownerElement.itemComputedStyle(itemElement);
     popupItem.textDirection = toWebTextDirection(style.direction());
     popupItem.hasTextDirectionOverride = isOverride(style.unicodeBidi());
   }
 
   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(
       ownerElement.selectedListIndex(), ownerElement);
   info.rightAligned = menuStyle.direction() == RTL;
   info.allowMultipleSelection = ownerElement.isMultiple();
   if (count < itemCount)
     items.shrink(count);
   info.items = items;
 }
@@ skipping 26 matching lines @@
     if (ownerElement.itemIsDisplayNone(*items[i]))
       continue;
     if (popupMenuItemIndex == i)
       return indexTracker;
     ++indexTracker;
   }
   return -1;
 }
 
 }  // namespace blink