CSSStyleImageValue::imageLayoutSize() shouldn't crash if no ImageResourceContent

third_party/WebKit/Source/core/css/cssom/CSSStyleImageValue.h

Index: third_party/WebKit/Source/core/css/cssom/CSSStyleImageValue.h
diff --git a/third_party/WebKit/Source/core/css/cssom/CSSStyleImageValue.h b/third_party/WebKit/Source/core/css/cssom/CSSStyleImageValue.h
index 667d4dfad43261af48f57415120476463c610e3e..e075f54aca4e57de77464eba5d62cbf85e6bd80d 100644
--- a/third_party/WebKit/Source/core/css/cssom/CSSStyleImageValue.h
+++ b/third_party/WebKit/Source/core/css/cssom/CSSStyleImageValue.h
@@ -56,8 +56,12 @@ class CORE_EXPORT CSSStyleImageValue : public CSSResourceValue,
 
   virtual LayoutSize imageLayoutSize() const {
     DCHECK(!isCachePending());
-    return m_imageValue->cachedImage()->cachedImage()->imageSize(
-        DoNotRespectImageOrientation, 1, ImageResourceContent::IntrinsicSize);
+    ImageResourceContent* resourceContent =
+        m_imageValue->cachedImage()->cachedImage();
+    return resourceContent
+               ? resourceContent->imageSize(DoNotRespectImageOrientation, 1,
+                                            ImageResourceContent::IntrinsicSize)
+               : LayoutSize(0, 0);
   }
 
   virtual bool isCachePending() const { return m_imageValue->isCachePending(); }