Don't allow whitespace between elements with display:table-cell

Source/core/layout/LayoutTheme.cpp

 /**
  * This file is part of the theme implementation for form controls in WebCore.
  *
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Computer, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 62 matching lines @@
 #if USE(NEW_THEME)
     , m_platformTheme(platformTheme())
 #endif
 {
 }
 
 void LayoutTheme::adjustStyle(ComputedStyle& style, Element* e, const AuthorStyleInfo& authorStyle)
 {
     ASSERT(style.hasAppearance());
 
-    // Force inline and table display styles to be inline-block (except for table- which is block)
+    // Force inline and table display styles to be inline-block (except for table- which is block, and table-cell which we handle correctly).
+    // TODO(rhogan) crbug.com/515771: Allow all table part display types on form controls and create the appropriate anonymous table parts to contain them.
     ControlPart part = style.appearance();
     if (style.display() == INLINE || style.display() == INLINE_TABLE || style.display() == TABLE_ROW_GROUP
         || style.display() == TABLE_HEADER_GROUP || style.display() == TABLE_FOOTER_GROUP
         || style.display() == TABLE_ROW || style.display() == TABLE_COLUMN_GROUP || style.display() == TABLE_COLUMN
-        || style.display() == TABLE_CELL || style.display() == TABLE_CAPTION)
+        || style.display() == TABLE_CAPTION)
         style.setDisplay(INLINE_BLOCK);
     else if (style.display() == LIST_ITEM || style.display() == TABLE)
         style.setDisplay(BLOCK);
 
     if (isControlStyled(style, authorStyle)) {
         if (part == MenulistPart) {
             style.setAppearance(MenulistButtonPart);
             part = MenulistButtonPart;
         } else {
             style.setAppearance(NoControlPart);
@@ skipping 842 matching lines @@
 
     // padding - not honored by WinIE, needs to be removed.
     style.resetPadding();
 
     // border - honored by WinIE, but looks terrible (just paints in the control box and turns off the Windows XP theme)
     // for now, we will not honor it.
     style.resetBorder();
 }
 
 } // namespace blink