[WIP] Migrate Fullscreen to use top layer instead of RenderFullScreen

Source/core/dom/RenderTreeBuilder.cpp

Index: Source/core/dom/RenderTreeBuilder.cpp
diff --git a/Source/core/dom/RenderTreeBuilder.cpp b/Source/core/dom/RenderTreeBuilder.cpp
index c0b15ee8ff3ddecdbda4f73d9041c64f8124a511..37bd135122ac3186d8efbae1d3366457a114c276 100644
--- a/Source/core/dom/RenderTreeBuilder.cpp
+++ b/Source/core/dom/RenderTreeBuilder.cpp
@@ -227,12 +227,6 @@ void RenderTreeBuilder::createRendererForElementIfNeeded()
     element->setRenderer(newRenderer);
     newRenderer->setAnimatableStyle(&style); // setAnimatableStyle() can depend on renderer() already being set.
 
-    if (FullscreenElementStack::isActiveFullScreenElement(element)) {
-        newRenderer = RenderFullScreen::wrapRenderer(newRenderer, parentRenderer, &element->document());
-        if (!newRenderer)
-            return;
-    }
-
     // Note: Adding newRenderer instead of renderer(). renderer() may be a child of newRenderer.
     parentRenderer->addChild(newRenderer, nextRenderer);
 }