Change RenderObject::style(bool) to accept an enum instead

Source/core/rendering/RenderBoxModelObject.h

Index: Source/core/rendering/RenderBoxModelObject.h
diff --git a/Source/core/rendering/RenderBoxModelObject.h b/Source/core/rendering/RenderBoxModelObject.h
index 8f0c0b5c7b85178c2c1d3bb1f4df44a4bc9ddffd..f37d0b9ad97a46155bdf81c522206ba175bd66e6 100644
--- a/Source/core/rendering/RenderBoxModelObject.h
+++ b/Source/core/rendering/RenderBoxModelObject.h
@@ -162,8 +162,8 @@ public:
     virtual bool boxShadowShouldBeAppliedToBackground(BackgroundBleedAvoidance, InlineFlowBox* = 0) const;
 
     // Overridden by subclasses to determine line height and baseline position.
-    virtual LayoutUnit lineHeight(bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const = 0;
-    virtual int baselinePosition(FontBaseline, bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const = 0;
+    virtual LayoutUnit lineHeight(OwnOrFirstLineStyle, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const = 0;
+    virtual int baselinePosition(FontBaseline, OwnOrFirstLineStyle, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const = 0;
 
     virtual void mapAbsoluteToLocalPoint(MapCoordinatesFlags, TransformState&) const OVERRIDE;
     virtual const RenderObject* pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap&) const OVERRIDE;