Clear StyleResolverState after each resolve.

Source/core/html/canvas/CanvasRenderingContext2D.cpp

Index: Source/core/html/canvas/CanvasRenderingContext2D.cpp
diff --git a/Source/core/html/canvas/CanvasRenderingContext2D.cpp b/Source/core/html/canvas/CanvasRenderingContext2D.cpp
index 32b708eab9773898e24dda5fe736101fe95306dc..131afc09f6493d1a5111475578723fec27354e26 100644
--- a/Source/core/html/canvas/CanvasRenderingContext2D.cpp
+++ b/Source/core/html/canvas/CanvasRenderingContext2D.cpp
@@ -1994,19 +1994,17 @@ void CanvasRenderingContext2D::setFont(const String& newFont)
     newStyle->font().update(newStyle->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 = canvas()->styleResolver();
-    styleResolver->applyPropertyToStyle(CSSPropertyFontFamily, parsedStyle->getPropertyCSSValue(CSSPropertyFontFamily).get(), newStyle.get());
-    styleResolver->applyPropertyToCurrentStyle(CSSPropertyFontStyle, parsedStyle->getPropertyCSSValue(CSSPropertyFontStyle).get());
-    styleResolver->applyPropertyToCurrentStyle(CSSPropertyFontVariant, parsedStyle->getPropertyCSSValue(CSSPropertyFontVariant).get());
-    styleResolver->applyPropertyToCurrentStyle(CSSPropertyFontWeight, parsedStyle->getPropertyCSSValue(CSSPropertyFontWeight).get());
-
-    // 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();
-    styleResolver->applyPropertyToCurrentStyle(CSSPropertyFontSize, parsedStyle->getPropertyCSSValue(CSSPropertyFontSize).get());
-    styleResolver->updateFont();
-    styleResolver->applyPropertyToCurrentStyle(CSSPropertyLineHeight, parsedStyle->getPropertyCSSValue(CSSPropertyLineHeight).get());
+    styleResolver->applyPropertiesToStyle(properties, WTF_ARRAY_LENGTH(properties), newStyle.get());
 
     modifiableState().m_font = newStyle->font();
     modifiableState().m_font.update(styleResolver->fontSelector());