Table layout: Don't round during layout

This fixes an issue where the backgrounds and borders of table cells could overflow and be drawn on top of the border of the table container.

Source/Core/Layout/TableFormattingContext.cpp

@@ -73,7 +73,6 @@ UniquePtr<LayoutBox> TableFormattingContext::Format(ContainerBox* parent_contain
 
 	context.table_content_offset = box.GetPosition();
 	context.table_initial_content_size = Vector2f(initial_content_size.x, Math::Max(0.0f, initial_content_size.y));
-	Math::SnapToPixelGrid(context.table_content_offset, context.table_initial_content_size);
 
 	// When width or height is set, they act as minimum width or height, just as in CSS.
 	if (computed_table.width().type != Style::Width::Auto)
@@ -476,7 +475,7 @@ void TableFormattingContext::FormatCells(BoxList& cells, Vector2f& table_overflo
 		auto cell_box = FormattingContext::FormatIndependent(table_wrapper_box, element_cell, &box, FormattingContextType::Block);
 		Vector2f cell_visible_overflow_size = cell_box->GetVisibleOverflowSize();
 
-		// Set the position of the element within the the table container
+		// Set the position of the element within the table container
 		element_cell->SetOffset(cell_offset, element_table);
 
 		// The table baseline is simply set to the first cell that has a baseline.

Source/Core/Layout/TableFormattingDetails.cpp

@@ -617,16 +617,6 @@ static float InitializeTrackBoxes(TrackBoxList& boxes, const TrackMetricList& me
 	return cursor;
 }
 
-static void SnapTrackBoxesToPixelGrid(TrackBoxList& boxes)
-{
-	for (TrackBox& box : boxes)
-	{
-		Math::SnapToPixelGrid(box.cell_offset, box.cell_size);
-		Math::SnapToPixelGrid(box.track_offset, box.track_size);
-		Math::SnapToPixelGrid(box.group_offset, box.group_size);
-	}
-}
-
 float BuildColumnBoxes(TrackBoxList& column_boxes, const TrackMetricList& column_metrics, const TableGrid::ColumnList& grid_columns,
 	const float table_gap_x)
 {
@@ -654,8 +644,6 @@ float BuildColumnBoxes(TrackBoxList& column_boxes, const TrackMetricList& column
 		}
 	}
 
-	SnapTrackBoxesToPixelGrid(column_boxes);
-
 	return columns_width;
 }
 
@@ -677,8 +665,6 @@ float BuildRowBoxes(TrackBoxList& row_boxes, const TrackMetricList& row_metrics,
 		}
 	}
 
-	SnapTrackBoxesToPixelGrid(row_boxes);
-
 	return rows_height;
 }