Add <meta viewport> support to the preloader

Source/core/html/parser/HTMLPreloadScanner.h

Index: Source/core/html/parser/HTMLPreloadScanner.h
diff --git a/Source/core/html/parser/HTMLPreloadScanner.h b/Source/core/html/parser/HTMLPreloadScanner.h
index 642c704852739b32f1a0b3137d951d291d4d6190..eacb593535641c9edb7d79ef827292916515b946 100644
--- a/Source/core/html/parser/HTMLPreloadScanner.h
+++ b/Source/core/html/parser/HTMLPreloadScanner.h
@@ -27,6 +27,7 @@
 #ifndef HTMLPreloadScanner_h
 #define HTMLPreloadScanner_h
 
+#include "core/dom/ViewportDescription.h"
 #include "core/html/parser/CSSPreloadScanner.h"
 #include "core/html/parser/CompactHTMLToken.h"
 #include "core/html/parser/HTMLToken.h"
@@ -45,7 +46,7 @@ class MediaValues;
 class TokenPreloadScanner {
     WTF_MAKE_NONCOPYABLE(TokenPreloadScanner); WTF_MAKE_FAST_ALLOCATED(TokenPreloadScanner);
 public:
-    TokenPreloadScanner(const KURL& documentURL, PassRefPtr<MediaValues>);
+    TokenPreloadScanner(const KURL& documentURL, PassRefPtr<MediaValues>, const Length& defaultViewportMinWidth, bool viewportMetaZeroValuesQuirk);
     ~TokenPreloadScanner();
 
     void scan(const HTMLToken&, const SegmentedString&, PreloadRequestStream& requests);
@@ -100,6 +101,8 @@ private:
     String m_pictureSourceURL;
     size_t m_templateCount;
     RefPtr<MediaValues> m_mediaValues;
+    Length m_defaultViewportMinWidth;
+    bool m_viewportZeroMetaQuirk;
 
     Vector<Checkpoint> m_checkpoints;
 };
@@ -107,7 +110,7 @@ private:
 class HTMLPreloadScanner {
     WTF_MAKE_NONCOPYABLE(HTMLPreloadScanner); WTF_MAKE_FAST_ALLOCATED(HTMLPreloadScanner);
 public:
-    HTMLPreloadScanner(const HTMLParserOptions&, const KURL& documentURL, PassRefPtr<MediaValues>);
+    HTMLPreloadScanner(const HTMLParserOptions&, const KURL& documentURL, PassRefPtr<MediaValues>, const Length& defaultViewportMinWidth, bool viewportMetaZeroValuesQuirk);
     ~HTMLPreloadScanner();
 
     void appendToEnd(const SegmentedString&);