Use refs for GraphicsContext

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

Index: third_party/WebKit/Source/core/paint/TableCellPainter.cpp
diff --git a/third_party/WebKit/Source/core/paint/TableCellPainter.cpp b/third_party/WebKit/Source/core/paint/TableCellPainter.cpp
index db01b6696654507dab384117324566a8fecbf5e7..6b08b269be5b3a1b4b0915f752a364defd00bcf4 100644
--- a/third_party/WebKit/Source/core/paint/TableCellPainter.cpp
+++ b/third_party/WebKit/Source/core/paint/TableCellPainter.cpp
@@ -105,11 +105,11 @@ void TableCellPainter::paintCollapsedBorders(const PaintInfo& paintInfo, const L
     if (!paintInfo.cullRect().intersectsCullRect(borderRect))
         return;
 
-    GraphicsContext* graphicsContext = paintInfo.context;
-    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*graphicsContext, m_layoutTableCell, static_cast<DisplayItem::Type>(displayItemType), adjustedPaintOffset))
+    GraphicsContext& graphicsContext = paintInfo.context;
+    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(graphicsContext, m_layoutTableCell, static_cast<DisplayItem::Type>(displayItemType), adjustedPaintOffset))
         return;
 
-    LayoutObjectDrawingRecorder recorder(*graphicsContext, m_layoutTableCell, static_cast<DisplayItem::Type>(displayItemType), borderRect, adjustedPaintOffset);
+    LayoutObjectDrawingRecorder recorder(graphicsContext, m_layoutTableCell, static_cast<DisplayItem::Type>(displayItemType), borderRect, adjustedPaintOffset);
     Color cellColor = m_layoutTableCell.resolveColor(CSSPropertyColor);
 
     // We never paint diagonals at the joins.  We simply let the border with the highest
@@ -153,9 +153,9 @@ void TableCellPainter::paintBackgroundsBehindCell(const PaintInfo& paintInfo, co
     Optional<LayoutObjectDrawingRecorder> recorder;
     if (backgroundObject != &m_layoutTableCell) {
         LayoutPoint adjustedPaintOffset = paintRect.location();
-        if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*paintInfo.context, m_layoutTableCell, type, adjustedPaintOffset))
+        if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(paintInfo.context, m_layoutTableCell, type, adjustedPaintOffset))
             return;
-        recorder.emplace(*paintInfo.context, m_layoutTableCell, type, paintRect, adjustedPaintOffset);
+        recorder.emplace(paintInfo.context, m_layoutTableCell, type, paintRect, adjustedPaintOffset);
     } else {
         ASSERT(paintRect.location() == paintOffset);
     }
@@ -166,11 +166,11 @@ void TableCellPainter::paintBackgroundsBehindCell(const PaintInfo& paintInfo, co
         // We have to clip here because the background would paint
         // on top of the borders otherwise.  This only matters for cells and rows.
         bool shouldClip = backgroundObject->hasLayer() && (backgroundObject == &m_layoutTableCell || backgroundObject == m_layoutTableCell.parent()) && tableElt->collapseBorders();
-        GraphicsContextStateSaver stateSaver(*paintInfo.context, shouldClip);
+        GraphicsContextStateSaver stateSaver(paintInfo.context, shouldClip);
         if (shouldClip) {
             LayoutRect clipRect(paintRect.location(), m_layoutTableCell.size());
             clipRect.expand(m_layoutTableCell.borderInsets());
-            paintInfo.context->clip(pixelSnappedIntRect(clipRect));
+            paintInfo.context.clip(pixelSnappedIntRect(clipRect));
         }
         BoxPainter(m_layoutTableCell).paintFillLayers(paintInfo, c, bgLayer, paintRect, BackgroundBleedNone, SkXfermode::kSrcOver_Mode, backgroundObject);
     }
@@ -189,13 +189,13 @@ void TableCellPainter::paintBoxDecorationBackground(const PaintInfo& paintInfo,
     if (!m_layoutTableCell.hasBackground() && !m_layoutTableCell.styleRef().boxShadow() && !needsToPaintBorder)
         return;
 
-    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*paintInfo.context, m_layoutTableCell, DisplayItem::BoxDecorationBackground, paintOffset))
+    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(paintInfo.context, m_layoutTableCell, DisplayItem::BoxDecorationBackground, paintOffset))
         return;
 
     LayoutRect visualOverflowRect = m_layoutTableCell.visualOverflowRect();
     visualOverflowRect.moveBy(paintOffset);
     // TODO(chrishtr): the pixel-snapping here is likely incorrect.
-    LayoutObjectDrawingRecorder recorder(*paintInfo.context, m_layoutTableCell, DisplayItem::BoxDecorationBackground, pixelSnappedIntRect(visualOverflowRect), paintOffset);
+    LayoutObjectDrawingRecorder recorder(paintInfo.context, m_layoutTableCell, DisplayItem::BoxDecorationBackground, pixelSnappedIntRect(visualOverflowRect), paintOffset);
 
     LayoutRect paintRect = paintBounds(paintOffset, DoNotAddOffsetFromParent);
 
@@ -221,11 +221,11 @@ void TableCellPainter::paintMask(const PaintInfo& paintInfo, const LayoutPoint&
     if (!tableElt->collapseBorders() && m_layoutTableCell.style()->emptyCells() == HIDE && !m_layoutTableCell.firstChild())
         return;
 
-    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*paintInfo.context, m_layoutTableCell, paintInfo.phase, paintOffset))
+    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(paintInfo.context, m_layoutTableCell, paintInfo.phase, paintOffset))
         return;
 
     LayoutRect paintRect = paintBounds(paintOffset, DoNotAddOffsetFromParent);
-    LayoutObjectDrawingRecorder recorder(*paintInfo.context, m_layoutTableCell, paintInfo.phase, paintRect, paintOffset);
+    LayoutObjectDrawingRecorder recorder(paintInfo.context, m_layoutTableCell, paintInfo.phase, paintRect, paintOffset);
     BoxPainter(m_layoutTableCell).paintMaskImages(paintInfo, paintRect);
 }