SVG does not respect overflow:visible.

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 d83982e5538169dae5244286d250138da522756d..c364b0db535fa8993c5a3b4f7ffdb48e5f9f9f44 100644
--- a/Source/core/css/resolver/StyleAdjuster.cpp
+++ b/Source/core/css/resolver/StyleAdjuster.cpp
@@ -407,27 +407,6 @@ void StyleAdjuster::adjustOverflow(RenderStyle* style, Element* element)
         style->setOverflowX(OVISIBLE);
         style->setOverflowY(OVISIBLE);
     }
-
-    // Spec: http://www.w3.org/TR/SVG/masking.html#OverflowProperty
-    if (element && element->isSVGElement()) {

[fs, 2014/04/15 15:43:07]

Doesn't this removal require changes elsewhere?
(SVGRenderSupport::isOverflowHidden)

[Erik Dahlström (inactive), 2014/04/16 15:53:49]

It does, SVGRenderSuppoert::isOverflowHidden should deal with this. 

The reason for removing the code here is to allow for different behaviour for
the root <svg>, for nested <svg> elements, and for any other child element of an
<svg>. And it's needed for allowing overflowX and overflowY to be handled
separately (useful in the <svg> document root case).

-        if (style->overflowY() == OSCROLL)
-            style->setOverflowY(OHIDDEN);
-        else if (style->overflowY() == OAUTO)
-            style->setOverflowY(OVISIBLE);
-
-        if (style->overflowX() == OSCROLL)
-            style->setOverflowX(OHIDDEN);
-        else if (style->overflowX() == OAUTO)
-            style->setOverflowX(OVISIBLE);
-
-        if (style->overflowX() == style->overflowY())
-            return;
-
-        if (style->overflowX() != OVISIBLE)
-            style->setOverflowX(OVISIBLE);
-        else
-            style->setOverflowY(OVISIBLE);
-    }
 }
 
 void StyleAdjuster::adjustStyleForDisplay(RenderStyle* style, RenderStyle* parentStyle)