Replace ASSERT with DCHECK in core/

third_party/WebKit/Source/core/css/RuleSet.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
@@ skipping 352 matching lines @@
     while (!pending_rules->IsEmpty()) {
       builder.Append(pending_rules->Peek());
       pending_rules->Pop();
     }
 
     compact_rules->value = builder.Release();
   }
 }
 
 void RuleSet::CompactRules() {
-  ASSERT(pending_rules_);
+  DCHECK(pending_rules_);
   PendingRuleMaps* pending_rules = pending_rules_.Release();
   CompactPendingRules(pending_rules->id_rules, id_rules_);
   CompactPendingRules(pending_rules->class_rules, class_rules_);
   CompactPendingRules(pending_rules->tag_rules, tag_rules_);
   CompactPendingRules(pending_rules->shadow_pseudo_element_rules,
                       shadow_pseudo_element_rules_);
   link_pseudo_class_rules_.ShrinkToFit();
   cue_pseudo_rules_.ShrinkToFit();
   focus_pseudo_class_rules_.ShrinkToFit();
   placeholder_pseudo_rules_.ShrinkToFit();
@@ skipping 47 matching lines @@
 }
 
 #ifndef NDEBUG
 void RuleSet::Show() const {
   for (const auto& rule : all_rules_)
     rule.Selector().Show();
 }
 #endif
 
 }  // namespace blink