Switch line layout to LayoutUnit.

Source/core/layout/line/AbstractInlineTextBox.cpp

Index: Source/core/layout/line/AbstractInlineTextBox.cpp
diff --git a/Source/core/layout/line/AbstractInlineTextBox.cpp b/Source/core/layout/line/AbstractInlineTextBox.cpp
index 1828c4d4f6d6c8c4c1573d3fd63f71204e077026..bef82ccc2abba675f8522d68d4c84fe8027a798c 100644
--- a/Source/core/layout/line/AbstractInlineTextBox.cpp
+++ b/Source/core/layout/line/AbstractInlineTextBox.cpp
@@ -87,7 +87,7 @@ LayoutRect AbstractInlineTextBox::bounds() const
     if (!m_inlineTextBox || !m_layoutText)
         return LayoutRect();
 
-    FloatRect boundaries = m_inlineTextBox->calculateBoundaries().toFloatRect();
+    FloatRect boundaries = m_inlineTextBox->calculateBoundaries();
     return LayoutRect(m_layoutText->localToAbsoluteQuad(boundaries).enclosingBoundingBox());
 }
 
@@ -109,7 +109,7 @@ AbstractInlineTextBox::Direction AbstractInlineTextBox::direction() const
     return (m_inlineTextBox->direction() == RTL ? BottomToTop : TopToBottom);
 }
 
-void AbstractInlineTextBox::characterWidths(Vector<FloatWillBeLayoutUnit>& widths) const
+void AbstractInlineTextBox::characterWidths(Vector<float>& widths) const
 {
     if (!m_inlineTextBox)
         return;