MediaValuesInitialViewport passed to MediaQueryEvaluator as bool.

third_party/WebKit/Source/core/css/MediaQueryEvaluator.h

 /*
  * CSS Media Query Evaluator
  *
  * Copyright (C) 2006 Kimmo Kinnunen <kimmo.t.kinnunen@nokia.com>.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 21 matching lines @@
 #include "platform/heap/Handle.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 class LocalFrame;
 class MediaQuery;
 class MediaQueryExp;
 class MediaQueryResult;
 class MediaQuerySet;
 class MediaValues;
+class MediaValuesInitialViewport;
 
 using MediaQueryResultList = HeapVector<Member<MediaQueryResult>>;
 
 // Class that evaluates css media queries as defined in
 // CSS3 Module "Media Queries" (http://www.w3.org/TR/css3-mediaqueries/)
 // Special constructors are needed, if simple media queries are to be
 // evaluated without knowledge of the medium features. This can happen
 // for example when parsing UA stylesheets, if evaluation is done
 // right after parsing.
 //
@@ skipping 21 matching lines @@
   MediaQueryEvaluator(const char* acceptedMediaType,
                       bool mediaFeatureResult = false);
 
   // Creates evaluator which evaluates full media queries.
   explicit MediaQueryEvaluator(LocalFrame*);
 
   // Creates evaluator which evaluates in a thread-safe manner a subset of media
   // values.
   explicit MediaQueryEvaluator(const MediaValues&);
 
+  explicit MediaQueryEvaluator(MediaValuesInitialViewport*);
+
   ~MediaQueryEvaluator();
 
   bool mediaTypeMatch(const String& mediaTypeToMatch) const;
 
   // Evaluates a list of media queries.
   bool eval(const MediaQuerySet*,
-            MediaQueryResultList* viewportDependent = 0,
-            MediaQueryResultList* deviceDependent = 0) const;
+            MediaQueryResultList* viewportDependent = nullptr,
+            MediaQueryResultList* deviceDependent = nullptr) const;
 
   // Evaluates media query.
   bool eval(const MediaQuery*,
-            MediaQueryResultList* viewportDependent = 0,
-            MediaQueryResultList* deviceDependent = 0) const;
+            MediaQueryResultList* viewportDependent = nullptr,
+            MediaQueryResultList* deviceDependent = nullptr) const;
 
   // Evaluates media query subexpression, ie "and (media-feature: value)" part.
   bool eval(const MediaQueryExp*) const;
 
   DECLARE_TRACE();
 
  private:
   const String mediaType() const;
 
   String m_mediaType;
-  bool m_expectedResult;
+  bool m_expectedResult = false;
   Member<MediaValues> m_mediaValues;
 };
 
 }  // namespace blink
 #endif