Move MediaQueryResults to RuleFeatureSet.

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 429 matching lines @@
   }
 }
 
 void StyleEngine::setRuleUsageTracker(StyleRuleUsageTracker* tracker) {
   m_tracker = tracker;
 
   if (m_resolver)
     m_resolver->setRuleUsageTracker(m_tracker);
 }
 
+RuleSet* StyleEngine::ruleSetForSheet(CSSStyleSheet& sheet) {
+  if (!sheet.matchesMediaQueries(ensureMediaQueryEvaluator()))
+    return nullptr;
+
+  AddRuleFlags addRuleFlags = RuleHasNoSpecialState;
+  if (m_document->getSecurityOrigin()->canRequest(sheet.baseURL()))
+    addRuleFlags = RuleHasDocumentSecurityOrigin;
+  return &sheet.contents()->ensureRuleSet(*m_mediaQueryEvaluator, addRuleFlags);
+}
+
 void StyleEngine::createResolver() {
   m_resolver = StyleResolver::create(*m_document);
 
   m_resolver->setRuleUsageTracker(m_tracker);
 
   // A scoped style resolver for document will be created during
   // appendActiveAuthorStyleSheets if needed.
   appendActiveAuthorStyleSheets();
   finishAppendAuthorStyleSheets();
 }
@@ skipping 682 matching lines @@
 const MediaQueryEvaluator& StyleEngine::ensureMediaQueryEvaluator() {
   if (!m_mediaQueryEvaluator) {
     if (document().frame())
       m_mediaQueryEvaluator = new MediaQueryEvaluator(document().frame());
     else
       m_mediaQueryEvaluator = new MediaQueryEvaluator("all");
   }
   return *m_mediaQueryEvaluator;
 }
 
+bool StyleEngine::mediaQueryAffectedByViewportChange() {
+  const MediaQueryEvaluator& evaluator = ensureMediaQueryEvaluator();
+  const auto& results =
+      m_globalRuleSet.ruleFeatureSet().viewportDependentMediaQueryResults();
+  for (unsigned i = 0; i < results.size(); ++i) {
+    if (evaluator.eval(results[i]->expression()) != results[i]->result())
+      return true;
+  }
+  return false;
+}
+
+bool StyleEngine::mediaQueryAffectedByDeviceChange() {
+  const MediaQueryEvaluator& evaluator = ensureMediaQueryEvaluator();
+  const auto& results =
+      m_globalRuleSet.ruleFeatureSet().deviceDependentMediaQueryResults();
+  for (unsigned i = 0; i < results.size(); ++i) {
+    if (evaluator.eval(results[i]->expression()) != results[i]->result())
+      return true;
+  }
+  return false;
+}
+
 DEFINE_TRACE(StyleEngine) {
   visitor->trace(m_document);
   visitor->trace(m_injectedAuthorStyleSheets);
   visitor->trace(m_inspectorStyleSheet);
   visitor->trace(m_documentStyleSheetCollection);
   visitor->trace(m_styleSheetCollectionMap);
   visitor->trace(m_dirtyTreeScopes);
   visitor->trace(m_activeTreeScopes);
   visitor->trace(m_treeBoundaryCrossingScopes);
   visitor->trace(m_globalRuleSet);
   visitor->trace(m_resolver);
   visitor->trace(m_viewportResolver);
   visitor->trace(m_mediaQueryEvaluator);
   visitor->trace(m_styleInvalidator);
   visitor->trace(m_fontSelector);
   visitor->trace(m_textToSheetCache);
   visitor->trace(m_sheetToTextCache);
   visitor->trace(m_tracker);
   CSSFontSelectorClient::trace(visitor);
 }
 
 DEFINE_TRACE_WRAPPERS(StyleEngine) {
   for (auto sheet : m_injectedAuthorStyleSheets) {
     visitor->traceWrappers(sheet);
   }
   visitor->traceWrappers(m_documentStyleSheetCollection);
 }
 
 }  // namespace blink