Disable display: contents in SVG.

third_party/WebKit/Source/core/css/resolver/StyleAdjuster.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc.
  * All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
@@ skipping 446 matching lines @@
   // If we have first-letter pseudo style, transitions, or animations, do not
   // share this style.
   if (style.hasPseudoStyle(PseudoIdFirstLetter) || style.transitions() ||
       style.animations())
     style.setUnique();
 
   adjustStyleForEditing(style);
 
   bool isSVGElement = element && element->isSVGElement();
   if (isSVGElement) {
+    // display: contents computes to inline for replaced elements and form
+    // controls, and isn't specified for other kinds of SVG content[1], so let's
+    // just do the same here for all other SVG elements.
+    //
+    // If we wouldn't do this, then we'd need to ensure that display: contents
+    // doesn't prevent SVG elements from generating a LayoutObject in
+    // SVGElement::layoutObjectIsNeeded.
+    //
+    // [1]: https://www.w3.org/TR/SVG/painting.html#DisplayProperty
+    if (style.display() == EDisplay::Contents)
+      style.setDisplay(EDisplay::Inline);
+
     // Only the root <svg> element in an SVG document fragment tree honors css
     // position.
     if (!(isSVGSVGElement(*element) && element->parentNode() &&
           !element->parentNode()->isSVGElement()))
       style.setPosition(ComputedStyle::initialPosition());
 
     // SVG text layout code expects us to be a block-level style element.
     if ((isSVGForeignObjectElement(*element) || isSVGTextElement(*element)) &&
         style.isDisplayInlineType())
       style.setDisplay(EDisplay::Block);
 
     // Columns don't apply to svg text elements.
     if (isSVGTextElement(*element))
       style.clearMultiCol();
   }
   adjustStyleForAlignment(style, parentStyle);
 }
 
 }  // namespace blink