LayoutSVGImage should work correctly even when image size is unavailable

third_party/WebKit/Source/core/loader/resource/ImageResourceContent.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ImageResourceContent_h
 #define ImageResourceContent_h
 
 #include "core/CoreExport.h"
 #include "core/fetch/ResourceStatus.h"
 #include "platform/geometry/IntRect.h"
@@ skipping 67 matching lines @@
   LayoutSize imageSize(
       RespectImageOrientationEnum shouldRespectImageOrientation,
       float multiplier,
       SizeType = IntrinsicSize);
 
   void updateImageAnimationPolicy();
 
   void addObserver(ImageResourceObserver*);
   void removeObserver(ImageResourceObserver*);
 
+  bool isSizeAvailable() const {
+    return m_sizeAvailable == Image::SizeAvailable;
+  }
+
   DECLARE_TRACE();
 
   // Redirecting methods to Resource.
   const KURL& url() const;
   bool isAccessAllowed(SecurityOrigin*);
   const ResourceResponse& response() const;
   bool isLoaded() const;
   bool isLoading() const;
   bool errorOccurred() const;
   bool loadFailedOrCanceled() const;
@@ skipping 57 matching lines @@
   Image::SizeAvailability m_sizeAvailable = Image::SizeUnavailable;
 
   // Indicates if this resource's encoded image data can be purged and refetched
   // from disk cache to save memory usage. See crbug/664437.
   bool m_isRefetchableDataFromDiskCache;
 };
 
 }  // namespace blink
 
 #endif