Clear StyleResolverState after each resolve.

Source/core/css/FontLoader.cpp

Index: Source/core/css/FontLoader.cpp
diff --git a/Source/core/css/FontLoader.cpp b/Source/core/css/FontLoader.cpp
index 66a604cc7943265330562569e878b3b660780029..585da7ce8074f4ca24e6152dfb4b09bde042bab7 100644
--- a/Source/core/css/FontLoader.cpp
+++ b/Source/core/css/FontLoader.cpp
@@ -312,11 +312,6 @@ bool FontLoader::checkFont(const String& fontString, const String&)
     return true;
 }
 
-static void applyPropertyToCurrentStyle(StyleResolver* styleResolver, CSSPropertyID id, const RefPtr<StylePropertySet>& parsedStyle)
-{
-    styleResolver->applyPropertyToCurrentStyle(id, parsedStyle->getPropertyCSSValue(id).get());
-}
-
 bool FontLoader::resolveFontStyle(const String& fontString, Font& font)
 {
     // Interpret fontString in the same way as the 'font' attribute of CanvasRenderingContext2D.
@@ -344,19 +339,16 @@ bool FontLoader::resolveFontStyle(const String& fontString, Font& font)
     style->font().update(style->font().fontSelector());
 
     // Now map the font property longhands into the style.
+    CSSPropertyValue properties[] = {
+        CSSPropertyValue(CSSPropertyFontFamily, *parsedStyle),
+        CSSPropertyValue(CSSPropertyFontStyle, *parsedStyle),
+        CSSPropertyValue(CSSPropertyFontVariant, *parsedStyle),
+        CSSPropertyValue(CSSPropertyFontWeight, *parsedStyle),
+        CSSPropertyValue(CSSPropertyFontSize, *parsedStyle),
+        CSSPropertyValue(CSSPropertyLineHeight, *parsedStyle),
+    };
     StyleResolver* styleResolver = m_document->styleResolver();
-    styleResolver->applyPropertyToStyle(CSSPropertyFontFamily, parsedStyle->getPropertyCSSValue(CSSPropertyFontFamily).get(), style.get());
-    applyPropertyToCurrentStyle(styleResolver, CSSPropertyFontStyle, parsedStyle);
-    applyPropertyToCurrentStyle(styleResolver, CSSPropertyFontVariant, parsedStyle);
-    applyPropertyToCurrentStyle(styleResolver, CSSPropertyFontWeight, parsedStyle);
-
-    // As described in BUG66291, setting font-size and line-height on a font may entail a CSSPrimitiveValue::computeLengthDouble call,
-    // which assumes the fontMetrics are available for the affected font, otherwise a crash occurs (see http://trac.webkit.org/changeset/96122).
-    // The updateFont() calls below update the fontMetrics and ensure the proper setting of font-size and line-height.
-    styleResolver->updateFont();
-    applyPropertyToCurrentStyle(styleResolver, CSSPropertyFontSize, parsedStyle);
-    styleResolver->updateFont();
-    applyPropertyToCurrentStyle(styleResolver, CSSPropertyLineHeight, parsedStyle);
+    styleResolver->applyPropertiesToStyle(properties, WTF_ARRAY_LENGTH(properties), style.get());
 
     font = style->font();
     font.update(styleResolver->fontSelector());