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

Source/core/rendering/InlineBox.h

Index: Source/core/rendering/InlineBox.h
diff --git a/Source/core/rendering/InlineBox.h b/Source/core/rendering/InlineBox.h
index 128437839aaa10bef7ca551f5b33fa0b17622752..f1026a15c2850e1beb23ef80cd5a369b575615f2 100644
--- a/Source/core/rendering/InlineBox.h
+++ b/Source/core/rendering/InlineBox.h
@@ -148,7 +148,7 @@ public:
     void setExtracted(bool extracted = true) { m_bitfields.setExtracted(extracted); }
 
     void setFirstLineStyleBit(bool firstLine) { m_bitfields.setFirstLine(firstLine); }
-    bool isFirstLineStyle() const { return m_bitfields.firstLine(); }
+    OwnOrFirstLineStyle isFirstLineStyle() const { return m_bitfields.firstLine() ? FirstLineStyle : OwnStyle; }
 
     void remove(MarkLineBoxes = MarkLineBoxesDirty);
 
@@ -276,7 +276,7 @@ public:
 
     bool visibleToHitTestRequest(const HitTestRequest& request) const { return renderer().visibleToHitTestRequest(request); }
 
-    EVerticalAlign verticalAlign() const { return renderer().style(m_bitfields.firstLine())->verticalAlign(); }
+    EVerticalAlign verticalAlign() const { return renderer().style(m_bitfields.firstLine() ? FirstLineStyle : OwnStyle)->verticalAlign(); }
 
     // Use with caution! The type is not checked!
     RenderBoxModelObject* boxModelObject() const