Remove iframe@seamless

Source/core/css/resolver/StyleAdjuster.cpp

Index: Source/core/css/resolver/StyleAdjuster.cpp
diff --git a/Source/core/css/resolver/StyleAdjuster.cpp b/Source/core/css/resolver/StyleAdjuster.cpp
index d59b7093b148ea0c72118369569e90bd52e9b4b4..c8fd8aa82ed38fc4e1fcd32ff254bf1d5671a2b7 100644
--- a/Source/core/css/resolver/StyleAdjuster.cpp
+++ b/Source/core/css/resolver/StyleAdjuster.cpp
@@ -356,10 +356,6 @@ void StyleAdjuster::adjustRenderStyle(RenderStyle* style, RenderStyle* parentSty
         || style->hasFilter()))
         style->setTransformStyle3D(TransformStyle3DFlat);
 
-    // Seamless iframes behave like blocks. Map their display to inline-block when marked inline.
-    if (e && e->hasTagName(iframeTag) && style->display() == INLINE && toHTMLIFrameElement(e)->shouldDisplaySeamlessly())
-        style->setDisplay(INLINE_BLOCK);
-
     adjustGridItemPosition(style, parentStyle);
 
     if (e && e->isSVGElement()) {