Make `getComputedStyle` return the correct style for collapsed <img> elements.

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 21 matching lines @@
 
 #include "core/HTMLNames.h"
 #include "core/SVGNames.h"
 #include "core/dom/ContainerNode.h"
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/Settings.h"
 #include "core/frame/UseCounter.h"
 #include "core/html/HTMLIFrameElement.h"
+#include "core/html/HTMLImageElement.h"
 #include "core/html/HTMLInputElement.h"
 #include "core/html/HTMLPlugInElement.h"
 #include "core/html/HTMLTableCellElement.h"
 #include "core/html/HTMLTextAreaElement.h"
 #include "core/layout/LayoutTheme.h"
 #include "core/style/ComputedStyle.h"
 #include "core/style/ComputedStyleConstants.h"
 #include "core/svg/SVGSVGElement.h"
 #include "platform/Length.h"
 #include "platform/transforms/TransformOperations.h"
@@ skipping 150 matching lines @@
       // use normal instead. If the width of the cell is fixed, then
       // we don't actually use NOWRAP.
       if (style.width().isFixed())
         style.setWhiteSpace(EWhiteSpace::kNormal);
       else
         style.setWhiteSpace(EWhiteSpace::kNowrap);
     }
     return;
   }
 
+  if (isHTMLImageElement(element)) {
+    if (toHTMLImageElement(element).isCollapsed())
+      style.setDisplay(EDisplay::None);
+    return;
+  }
+
   if (isHTMLTableElement(element)) {
     // Tables never support the -webkit-* values for text-align and will reset
     // back to the default.
     if (style.textAlign() == ETextAlign::kWebkitLeft ||
         style.textAlign() == ETextAlign::kWebkitCenter ||
         style.textAlign() == ETextAlign::kWebkitRight)
       style.setTextAlign(ETextAlign::kStart);
     return;
   }
 
@@ skipping 267 matching lines @@
       style.setDisplay(EDisplay::Block);
 
     // Columns don't apply to svg text elements.
     if (isSVGTextElement(*element))
       style.clearMultiCol();
   }
   adjustStyleForAlignment(style, parentStyle);
 }
 
 }  // namespace blink