Continue with InlineBox float->LayoutUnit migration.

Source/core/rendering/RootInlineBox.h

Index: Source/core/rendering/RootInlineBox.h
diff --git a/Source/core/rendering/RootInlineBox.h b/Source/core/rendering/RootInlineBox.h
index eeb7ac43e81e05e500628160e0830e31fbdc637f..dfa2a5a39a724e7b855c3ba253a2c20807b67751 100644
--- a/Source/core/rendering/RootInlineBox.h
+++ b/Source/core/rendering/RootInlineBox.h
@@ -21,6 +21,7 @@
 #ifndef RootInlineBox_h
 #define RootInlineBox_h
 
+#include "core/rendering/FloatToLayoutUnit.h"
 #include "core/rendering/InlineFlowBox.h"
 #include "platform/text/BidiContext.h"
 
@@ -46,7 +47,7 @@ public:
     RootInlineBox* nextRootBox() const { return static_cast<RootInlineBox*>(m_nextLineBox); }
     RootInlineBox* prevRootBox() const { return static_cast<RootInlineBox*>(m_prevLineBox); }
 
-    virtual void adjustPosition(float dx, float dy) override final;
+    virtual void adjustPosition(FloatWillBeLayoutUnit dx, FloatWillBeLayoutUnit dy) override final;
 
     LayoutUnit lineTop() const { return m_lineTop; }
     LayoutUnit lineBottom() const { return m_lineBottom; }
@@ -92,9 +93,9 @@ public:
 
     bool lineCanAccommodateEllipsis(bool ltr, int blockEdge, int lineBoxEdge, int ellipsisWidth);
     // Return the truncatedWidth, the width of the truncated text + ellipsis.
-    float placeEllipsis(const AtomicString& ellipsisStr, bool ltr, float blockLeftEdge, float blockRightEdge, float ellipsisWidth, InlineBox* markupBox = 0);
+    FloatWillBeLayoutUnit placeEllipsis(const AtomicString& ellipsisStr, bool ltr, FloatWillBeLayoutUnit blockLeftEdge, FloatWillBeLayoutUnit blockRightEdge, FloatWillBeLayoutUnit ellipsisWidth, InlineBox* markupBox = 0);
     // Return the position of the EllipsisBox or -1.
-    virtual float placeEllipsisBox(bool ltr, float blockLeftEdge, float blockRightEdge, float ellipsisWidth, float &truncatedWidth, bool& foundBox) override final;
+    virtual FloatWillBeLayoutUnit placeEllipsisBox(bool ltr, FloatWillBeLayoutUnit blockLeftEdge, FloatWillBeLayoutUnit blockRightEdge, FloatWillBeLayoutUnit ellipsisWidth, FloatWillBeLayoutUnit &truncatedWidth, bool& foundBox) override final;
 
     using InlineBox::hasEllipsisBox;
     EllipsisBox* ellipsisBox() const;
@@ -170,7 +171,7 @@ public:
     }
 
     // Used to calculate the underline offset for TextUnderlinePositionUnder.
-    float maxLogicalTop() const;
+    FloatWillBeLayoutUnit maxLogicalTop() const;
 
     Node* getLogicalStartBoxWithNode(InlineBox*&) const;
     Node* getLogicalEndBoxWithNode(InlineBox*&) const;