Move MediaQuery classes off BlinkGC heap

third_party/WebKit/Source/core/dom/StyleEngine.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
@@ skipping 1115 matching lines @@
       media_query_evaluator_ = new MediaQueryEvaluator("all");
   }
   return *media_query_evaluator_;
 }
 
 bool StyleEngine::MediaQueryAffectedByViewportChange() {
   const MediaQueryEvaluator& evaluator = EnsureMediaQueryEvaluator();
   const auto& results =
       global_rule_set_.GetRuleFeatureSet().ViewportDependentMediaQueryResults();
   for (unsigned i = 0; i < results.size(); ++i) {
-    if (evaluator.Eval(results[i]->Expression()) != results[i]->Result())
+    if (evaluator.Eval(results[i].Expression()) != results[i].Result())
       return true;
   }
   return false;
 }
 
 bool StyleEngine::MediaQueryAffectedByDeviceChange() {
   const MediaQueryEvaluator& evaluator = EnsureMediaQueryEvaluator();
   const auto& results =
       global_rule_set_.GetRuleFeatureSet().DeviceDependentMediaQueryResults();
   for (unsigned i = 0; i < results.size(); ++i) {
-    if (evaluator.Eval(results[i]->Expression()) != results[i]->Result())
+    if (evaluator.Eval(results[i].Expression()) != results[i].Result())
       return true;
   }
   return false;
 }
 
 DEFINE_TRACE(StyleEngine) {
   visitor->Trace(document_);
   visitor->Trace(injected_author_style_sheets_);
   visitor->Trace(inspector_style_sheet_);
   visitor->Trace(document_style_sheet_collection_);
@@ skipping 14 matching lines @@
 }
 
 DEFINE_TRACE_WRAPPERS(StyleEngine) {
   for (auto sheet : injected_author_style_sheets_) {
     visitor->TraceWrappers(sheet);
   }
   visitor->TraceWrappers(document_style_sheet_collection_);
 }
 
 }  // namespace blink