Consider subpixel accumulation when invalidating paint

Source/core/rendering/RenderBox.cpp

Index: Source/core/rendering/RenderBox.cpp
diff --git a/Source/core/rendering/RenderBox.cpp b/Source/core/rendering/RenderBox.cpp
index 43192a332a18e87b0040440bfeda83caafdf58cd..e1c3c758624a523323839df1d7737d7d57abd011 100644
--- a/Source/core/rendering/RenderBox.cpp
+++ b/Source/core/rendering/RenderBox.cpp
@@ -4092,7 +4092,7 @@ void RenderBox::incrementallyInvalidatePaint(const RenderLayerModelObject* paint
         LayoutUnit right = std::min<LayoutUnit>(newBounds.maxX(), oldBounds.maxX());
         if (rightRect.x() < right) {
             rightRect.setWidth(std::min(rightRect.width(), right - rightRect.x()));
-            invalidatePaintUsingContainer(paintInvalidationContainer, pixelSnappedIntRect(rightRect), InvalidationIncremental);
+            invalidatePaintUsingContainer(paintInvalidationContainer, rightRect, InvalidationIncremental);
         }
     }
 
@@ -4113,7 +4113,7 @@ void RenderBox::incrementallyInvalidatePaint(const RenderLayerModelObject* paint
         LayoutUnit bottom = std::min(newBounds.maxY(), oldBounds.maxY());
         if (bottomRect.y() < bottom) {
             bottomRect.setHeight(std::min(bottomRect.height(), bottom - bottomRect.y()));
-            invalidatePaintUsingContainer(paintInvalidationContainer, pixelSnappedIntRect(bottomRect), InvalidationIncremental);
+            invalidatePaintUsingContainer(paintInvalidationContainer, bottomRect, InvalidationIncremental);
         }
     }
 }