Remove unneeded 1px vertical offset for left/right double box sides

Source/core/paint/ObjectPainter.cpp

Index: Source/core/paint/ObjectPainter.cpp
diff --git a/Source/core/paint/ObjectPainter.cpp b/Source/core/paint/ObjectPainter.cpp
index 674ab64813e0c0d31cec8e2ffe6a22856806d483..d8dc5e068c2c7ab959342d903839e55590a1eb94 100644
--- a/Source/core/paint/ObjectPainter.cpp
+++ b/Source/core/paint/ObjectPainter.cpp
@@ -200,11 +200,8 @@ void ObjectPainter::drawDoubleBoxSide(GraphicsContext* graphicsContext, int x1,
             break;
         case BSLeft:
         case BSRight:
-            // FIXME: Why do we offset the border by 1 in this case but not the other one?
-            if (length > 1) {
-                graphicsContext->drawRect(IntRect(x1, y1 + 1, thirdOfThickness, length - 1));
-                graphicsContext->drawRect(IntRect(x2 - thirdOfThickness, y1 + 1, thirdOfThickness, length - 1));
-            }
+            graphicsContext->drawRect(IntRect(x1, y1, thirdOfThickness, length));
+            graphicsContext->drawRect(IntRect(x2 - thirdOfThickness, y1, thirdOfThickness, length));
             break;
         }