Make the LayoutRect->FloatRect constructor explicit.

Source/core/paint/TablePainter.cpp

Index: Source/core/paint/TablePainter.cpp
diff --git a/Source/core/paint/TablePainter.cpp b/Source/core/paint/TablePainter.cpp
index 34b3f64c0558ef6f41c1be59d32e9ed93f02f854..7724e26db18e4e2e496fcc3c97291ad55499d8a8 100644
--- a/Source/core/paint/TablePainter.cpp
+++ b/Source/core/paint/TablePainter.cpp
@@ -92,7 +92,8 @@ void TablePainter::paintMask(const PaintInfo& paintInfo, const LayoutPoint& pain
 
     LayoutRect rect(paintOffset, m_layoutTable.size());
     m_layoutTable.subtractCaptionRect(rect);
-    LayoutObjectDrawingRecorder recorder(*paintInfo.context, m_layoutTable, paintInfo.phase, pixelSnappedIntRect(rect));
+    // TODO(chrishtr): the pixel-snapping here is likely wrong.
+    LayoutObjectDrawingRecorder recorder(*paintInfo.context, m_layoutTable, paintInfo.phase, rect);
     BoxPainter(m_layoutTable).paintMaskImages(paintInfo, rect);
 }