Implement HTMLMarqueeElement's animation in private scripts

Source/core/rendering/RenderBlock.cpp

Index: Source/core/rendering/RenderBlock.cpp
diff --git a/Source/core/rendering/RenderBlock.cpp b/Source/core/rendering/RenderBlock.cpp
index b434cfe34bd3f30e60614cca9199fcc96fc749b1..b3fd8b4629a540f2956ddbd5c51c6b87a2e41a50 100644
--- a/Source/core/rendering/RenderBlock.cpp
+++ b/Source/core/rendering/RenderBlock.cpp
@@ -53,7 +53,6 @@
 #include "core/rendering/RenderGrid.h"
 #include "core/rendering/RenderInline.h"
 #include "core/rendering/RenderLayer.h"
-#include "core/rendering/RenderMarquee.h"
 #include "core/rendering/RenderObjectInlines.h"
 #include "core/rendering/RenderRegion.h"
 #include "core/rendering/RenderTableCell.h"
@@ -3163,7 +3162,7 @@ void RenderBlock::computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, Lay
     adjustIntrinsicLogicalWidthsForColumns(minLogicalWidth, maxLogicalWidth);
 
     // A horizontal marquee with inline children has no minimum width.
-    if (childrenInline() && isMarquee() && toRenderMarquee(this)->isHorizontal())
+    if (childrenInline())
         minLogicalWidth = 0;
 
     if (isTableCell()) {