Display images in multiline Braille

third_party/WebKit/Source/modules/accessibility/AXLayoutObject.cpp

 /*
 * Copyright (C) 2008 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 878 matching lines @@
   } else if (isHTMLCanvasElement(node)) {
     imageBitmap = ImageBitmap::create(toHTMLCanvasElement(node),
                                       Optional<IntRect>(), options);
   } else if (isHTMLVideoElement(node)) {
     imageBitmap = ImageBitmap::create(toHTMLVideoElement(node),
                                       Optional<IntRect>(), document, options);
   }
   if (!imageBitmap)
     return String();
 
+  StaticBitmapImage* bitmapImage = imageBitmap->bitmapImage();
+  if (!bitmapImage)
+    return String();
+
   // TODO(ccameron): AXLayoutObject::imageDataUrl should create sRGB images.
-  sk_sp<SkImage> image = imageBitmap->bitmapImage()->imageForCurrentFrame(
+  sk_sp<SkImage> image = bitmapImage->imageForCurrentFrame(
       ColorBehavior::transformToGlobalTarget());
   if (!image || image->width() <= 0 || image->height() <= 0)
     return String();
 
   // Determine the width and height of the output image, using a proportional
   // scale factor such that it's no larger than |maxSize|, if |maxSize| is not
   // empty. It only resizes the image to be smaller (if necessary), not
   // larger.
   float xScale = maxSize.width() ? maxSize.width() * 1.0 / image->width() : 1.0;
   float yScale =
@@ skipping 1578 matching lines @@
 
 bool AXLayoutObject::elementAttributeValue(
     const QualifiedName& attributeName) const {
   if (!m_layoutObject)
     return false;
 
   return equalIgnoringCase(getAttribute(attributeName), "true");
 }
 
 }  // namespace blink