(WIP) Invalidation during painting (for synchronized painting)

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

Index: third_party/WebKit/Source/core/paint/ReplacedPainter.cpp
diff --git a/third_party/WebKit/Source/core/paint/ReplacedPainter.cpp b/third_party/WebKit/Source/core/paint/ReplacedPainter.cpp
index fd4878c626a4a99c4ad0e22ca4d85cd6d60913d0..85353de0b1c83c608417254f876526d01010dc55 100644
--- a/third_party/WebKit/Source/core/paint/ReplacedPainter.cpp
+++ b/third_party/WebKit/Source/core/paint/ReplacedPainter.cpp
@@ -24,10 +24,10 @@ static bool shouldApplyViewportClip(const LayoutReplaced& layoutReplaced)
 
 void ReplacedPainter::paint(const PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 {
-    LayoutPoint adjustedPaintOffset = paintOffset + m_layoutReplaced.location();
-    if (!shouldPaint(paintInfo, adjustedPaintOffset))
+    if (!shouldPaint(paintInfo, paintOffset))
         return;
 
+    LayoutPoint adjustedPaintOffset = paintOffset + m_layoutReplaced.location();
     LayoutRect borderRect(adjustedPaintOffset, m_layoutReplaced.size());
 
     if (m_layoutReplaced.hasBoxDecorationBackground() && (paintInfo.phase == PaintPhaseForeground || paintInfo.phase == PaintPhaseSelection))
@@ -85,12 +85,12 @@ void ReplacedPainter::paint(const PaintInfo& paintInfo, const LayoutPoint& paint
     // The selection tint never gets clipped by border-radius rounding, since we want it to run right up to the edges of
     // surrounding content.
     bool drawSelectionTint = paintInfo.phase == PaintPhaseForeground && m_layoutReplaced.selectionState() != SelectionNone && !paintInfo.isPrinting();
-    if (drawSelectionTint && !LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(paintInfo.context, m_layoutReplaced, DisplayItem::SelectionTint, adjustedPaintOffset)) {
+    if (drawSelectionTint && !LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(paintInfo.context, m_layoutReplaced, DisplayItem::SelectionTint)) {
         LayoutRect selectionPaintingRect = m_layoutReplaced.localSelectionRect();
         selectionPaintingRect.moveBy(adjustedPaintOffset);
         IntRect selectionPaintingIntRect = pixelSnappedIntRect(selectionPaintingRect);
 
-        LayoutObjectDrawingRecorder drawingRecorder(paintInfo.context, m_layoutReplaced, DisplayItem::SelectionTint, selectionPaintingIntRect, adjustedPaintOffset);
+        LayoutObjectDrawingRecorder drawingRecorder(paintInfo.context, m_layoutReplaced, DisplayItem::SelectionTint, selectionPaintingIntRect);
         paintInfo.context.fillRect(selectionPaintingIntRect, m_layoutReplaced.selectionBackgroundColor());
     }
 }