Enable MQ evaluation off the main thread

Source/core/html/parser/HTMLResourcePreloader.h

Index: Source/core/html/parser/HTMLResourcePreloader.h
diff --git a/Source/core/html/parser/HTMLResourcePreloader.h b/Source/core/html/parser/HTMLResourcePreloader.h
index 21a67545efe32365842906884f75394376a021a2..df505a7059c46a97524681c87f8614c5d62d2ad1 100644
--- a/Source/core/html/parser/HTMLResourcePreloader.h
+++ b/Source/core/html/parser/HTMLResourcePreloader.h
@@ -34,14 +34,10 @@ namespace WebCore {
 
 class PreloadRequest {
 public:
-    static PassOwnPtr<PreloadRequest> create(const String& initiatorName, const TextPosition& initiatorPosition, const String& resourceURL, const KURL& baseURL, CachedResource::Type resourceType, const String& mediaAttribute)
-    {
-        return adoptPtr(new PreloadRequest(initiatorName, initiatorPosition, resourceURL, baseURL, resourceType, mediaAttribute));
-    }
 
     static PassOwnPtr<PreloadRequest> create(const String& initiatorName, const TextPosition& initiatorPosition, const String& resourceURL, const KURL& baseURL, CachedResource::Type resourceType)
     {
-        return adoptPtr(new PreloadRequest(initiatorName, initiatorPosition, resourceURL, baseURL, resourceType, ""));
+        return adoptPtr(new PreloadRequest(initiatorName, initiatorPosition, resourceURL, baseURL, resourceType));
     }
 
     bool isSafeToSendToAnotherThread() const;
@@ -49,19 +45,17 @@ public:
     CachedResourceRequest resourceRequest(Document*);
 
     const String& charset() const { return m_charset; }
-    const String& media() const { return m_mediaAttribute; }
     void setCharset(const String& charset) { m_charset = charset.isolatedCopy(); }
     void setCrossOriginModeAllowsCookies(bool allowsCookies) { m_crossOriginModeAllowsCookies = allowsCookies; }
     CachedResource::Type resourceType() const { return m_resourceType; }
 
 private:
-    PreloadRequest(const String& initiatorName, const TextPosition& initiatorPosition, const String& resourceURL, const KURL& baseURL, CachedResource::Type resourceType, const String& mediaAttribute)
+    PreloadRequest(const String& initiatorName, const TextPosition& initiatorPosition, const String& resourceURL, const KURL& baseURL, CachedResource::Type resourceType)
         : m_initiatorName(initiatorName.isolatedCopy())
         , m_initiatorPosition(initiatorPosition)
         , m_resourceURL(resourceURL.isolatedCopy())
         , m_baseURL(baseURL.copy())
         , m_resourceType(resourceType)
-        , m_mediaAttribute(mediaAttribute.isolatedCopy())
         , m_crossOriginModeAllowsCookies(false)
     {
     }
@@ -74,7 +68,6 @@ private:
     KURL m_baseURL;
     String m_charset;
     CachedResource::Type m_resourceType;
-    String m_mediaAttribute;
     bool m_crossOriginModeAllowsCookies;
 };