Use refs for GraphicsContext

third_party/WebKit/Source/core/paint/TablePainter.cpp

Index: third_party/WebKit/Source/core/paint/TablePainter.cpp
diff --git a/third_party/WebKit/Source/core/paint/TablePainter.cpp b/third_party/WebKit/Source/core/paint/TablePainter.cpp
index 51d74a13f77eaf0fe5fc6d1f0aa8d40883292c79..8d5afc357104c33b3b56fdac783cdca154c6cc7a 100644
--- a/third_party/WebKit/Source/core/paint/TablePainter.cpp
+++ b/third_party/WebKit/Source/core/paint/TablePainter.cpp
@@ -81,13 +81,13 @@ void TablePainter::paintMask(const PaintInfo& paintInfo, const LayoutPoint& pain
     if (m_layoutTable.style()->visibility() != VISIBLE || paintInfo.phase != PaintPhaseMask)
         return;
 
-    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*paintInfo.context, m_layoutTable, paintInfo.phase, paintOffset))
+    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(paintInfo.context, m_layoutTable, paintInfo.phase, paintOffset))
         return;
 
     LayoutRect rect(paintOffset, m_layoutTable.size());
     m_layoutTable.subtractCaptionRect(rect);
 
-    LayoutObjectDrawingRecorder recorder(*paintInfo.context, m_layoutTable, paintInfo.phase, rect, paintOffset);
+    LayoutObjectDrawingRecorder recorder(paintInfo.context, m_layoutTable, paintInfo.phase, rect, paintOffset);
     BoxPainter(m_layoutTable).paintMaskImages(paintInfo, rect);
 }