Remove MediaValues' dependency on RenderStyle

Source/core/css/MediaQueryEvaluator.cpp

 /*
  * CSS Media Query Evaluator
  *
  * Copyright (C) 2006 Kimmo Kinnunen <kimmo.t.kinnunen@nokia.com>.
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Intel Corporation. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ skipping 64 matching lines @@
     , m_expectedResult(mediaFeatureResult)
 {
 }
 
 MediaQueryEvaluator::MediaQueryEvaluator(const char* acceptedMediaType, bool mediaFeatureResult)
     : m_mediaType(acceptedMediaType)
     , m_expectedResult(mediaFeatureResult)
 {
 }
 
-MediaQueryEvaluator::MediaQueryEvaluator(const String& acceptedMediaType, LocalFrame* frame, RenderStyle* style)
+MediaQueryEvaluator::MediaQueryEvaluator(const String& acceptedMediaType, LocalFrame* frame)
     : m_mediaType(acceptedMediaType)
     , m_expectedResult(false) // Doesn't matter when we have m_frame and m_style.
-    , m_mediaValues(MediaValuesDynamic::create(frame, style))
+    , m_mediaValues(MediaValues::createDynamicIfFrameExists(frame))
 {
 }
 
 MediaQueryEvaluator::MediaQueryEvaluator(const String& acceptedMediaType, const MediaValues& mediaValues)
     : m_mediaType(acceptedMediaType)
     , m_expectedResult(false) // Doesn't matter when we have mediaValues.
     , m_mediaValues(mediaValues.copy())
 {
 }
 
@@ skipping 542 matching lines @@
     // Call the media feature evaluation function. Assume no prefix and let
     // trampoline functions override the prefix if prefix is used.
     EvalFunc func = gFunctionMap->get(expr->mediaFeature().impl());
     if (func)
         return func(expr->value(), NoPrefix, *m_mediaValues);
 
     return false;
 }
 
 } // namespace