Remove display:compact as per https://groups.google.com/a/chromium.org/d/topic/blink-dev/j6QErzkX4R…

Source/core/rendering/RenderObject.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 154 matching lines @@
             return new RenderRubyAsInline(element);
         else if (style->display() == BLOCK)
             return new RenderRubyAsBlock(element);
     }
     // treat <rt> as ruby text ONLY if it still has its default treatment of block
     if (element->hasTagName(rtTag) && style->display() == BLOCK)
         return new RenderRubyText(element);
     if (RuntimeEnabledFeatures::cssRegionsEnabled() && style->isDisplayRegionType() && style->hasFlowFrom() && doc.renderView())
         return new RenderRegion(element, 0);
 
-    if (style->display() == COMPACT)
-        UseCounter::count(doc, UseCounter::CSSDisplayCompact);
-
     switch (style->display()) {
     case NONE:
         return 0;
     case INLINE:
         return new RenderInline(element);
     case BLOCK:
     case INLINE_BLOCK:
-    case COMPACT:
         if ((!style->hasAutoColumnCount() || !style->hasAutoColumnWidth()) && doc.regionBasedColumnsEnabled())
             return new RenderMultiColumnBlock(element);
         return new RenderBlockFlow(element);
     case LIST_ITEM:
         return new RenderListItem(element);
     case TABLE:
     case INLINE_TABLE:
         return new RenderTable(element);
     case TABLE_ROW_GROUP:
     case TABLE_HEADER_GROUP:
@@ skipping 3189 matching lines @@
 {
     if (object1) {
         const WebCore::RenderObject* root = object1;
         while (root->parent())
             root = root->parent();
         root->showRenderTreeAndMark(object1, "*", object2, "-", 0);
     }
 }
 
 #endif