getComputedStyle() should return used value for 'line-height'

third_party/WebKit/Source/core/css/ComputedStyleCSSValueMapping.cpp

Index: third_party/WebKit/Source/core/css/ComputedStyleCSSValueMapping.cpp
diff --git a/third_party/WebKit/Source/core/css/ComputedStyleCSSValueMapping.cpp b/third_party/WebKit/Source/core/css/ComputedStyleCSSValueMapping.cpp
index c2262b9e55127ffd155c225031147f7ce0ffcf65..97c1f47b8daaa635e09217b00aa11c0b0e36aede 100644
--- a/third_party/WebKit/Source/core/css/ComputedStyleCSSValueMapping.cpp
+++ b/third_party/WebKit/Source/core/css/ComputedStyleCSSValueMapping.cpp
@@ -461,7 +461,7 @@ static PassRefPtrWillBeRawPtr<CSSValueList> valueForContentPositionAndDistributi
 
 static PassRefPtrWillBeRawPtr<CSSPrimitiveValue> valueForLineHeight(const ComputedStyle& style)
 {
-    Length length = style.lineHeight();
+    Length length = Length(style.computedLineHeight(), Fixed);
     if (length.isNegative())
         return cssValuePool().createIdentifierValue(CSSValueNormal);