Switch line layout to LayoutUnit.

Source/core/layout/svg/line/SVGRootInlineBox.h

Index: Source/core/layout/svg/line/SVGRootInlineBox.h
diff --git a/Source/core/layout/svg/line/SVGRootInlineBox.h b/Source/core/layout/svg/line/SVGRootInlineBox.h
index 8b7f1f5ef4e766b5318f701f512bfae5d9ae8416..a69a0c5c583c638281b9c08493309838839a8e31 100644
--- a/Source/core/layout/svg/line/SVGRootInlineBox.h
+++ b/Source/core/layout/svg/line/SVGRootInlineBox.h
@@ -23,7 +23,6 @@
 #ifndef SVGRootInlineBox_h
 #define SVGRootInlineBox_h
 
-#include "core/layout/line/FloatToLayoutUnit.h"
 #include "core/layout/line/RootInlineBox.h"
 #include "core/layout/svg/SVGTextLayoutEngine.h"
 
@@ -39,8 +38,8 @@ public:
 
     virtual bool isSVGRootInlineBox() const override { return true; }
 
-    virtual FloatWillBeLayoutUnit virtualLogicalHeight() const override { return m_logicalHeight; }
-    void setLogicalHeight(FloatWillBeLayoutUnit height) { m_logicalHeight = height; }
+    virtual LayoutUnit virtualLogicalHeight() const override { return m_logicalHeight; }
+    void setLogicalHeight(LayoutUnit height) { m_logicalHeight = height; }
 
     virtual void paint(const PaintInfo&, const LayoutPoint&, LayoutUnit lineTop, LayoutUnit lineBottom) override;
 
@@ -53,11 +52,11 @@ public:
 private:
     void reorderValueLists(Vector<SVGTextLayoutAttributes*>&);
     void layoutCharactersInTextBoxes(InlineFlowBox*, SVGTextLayoutEngine&);
-    void layoutChildBoxes(InlineFlowBox*, FloatRectWillBeLayoutRect* = 0);
-    void layoutRootBox(const FloatRectWillBeLayoutRect&);
+    void layoutChildBoxes(InlineFlowBox*, LayoutRect* = 0);
+    void layoutRootBox(const LayoutRect&);
 
 private:
-    FloatWillBeLayoutUnit m_logicalHeight;
+    LayoutUnit m_logicalHeight;
 };
 
 DEFINE_INLINE_BOX_TYPE_CASTS(SVGRootInlineBox);