Collapse images disallowed by the Safe Browsing Subresource Filter.

third_party/WebKit/Source/core/html/HTMLImageLoader.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2010 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 38 matching lines @@
 
   bool errorOccurred = image()->errorOccurred();
   if (isHTMLObjectElement(*element()) && !errorOccurred) {
     // An <object> considers a 404 to be an error and should fire onerror.
     errorOccurred = (image()->response().httpStatusCode() >= 400);
   }
   element()->dispatchEvent(Event::create(errorOccurred ? EventTypeNames::error
                                                        : EventTypeNames::load));
 }
 
-static void loadFallbackContentForElement(Element* element) {
-  if (isHTMLImageElement(element))
-    toHTMLImageElement(element)->ensureFallbackContent();
-  else if (isHTMLInputElement(element))
-    toHTMLInputElement(element)->ensureFallbackContent();
-}
-
 void HTMLImageLoader::noImageResourceToLoad() {
   // FIXME: Use fallback content even when there is no alt-text. The only
   // blocker is the large amount of rebaselining it requires.
-  if (!toHTMLElement(element())->altText().isEmpty())
-    loadFallbackContentForElement(element());
+  if (toHTMLElement(element())->altText().isEmpty())
+    return;
+
+  if (isHTMLImageElement(element()))
+    toHTMLImageElement(element())->ensureCollapsedOrFallbackContent();
+  else if (isHTMLInputElement(element()))
+    toHTMLInputElement(element())->ensureFallbackContent();
 }
 
 void HTMLImageLoader::imageNotifyFinished(ImageResource*) {
   ImageResource* cachedImage = image();
   Element* element = this->element();
   ImageLoader::imageNotifyFinished(cachedImage);
 
   bool loadError = cachedImage->errorOccurred();
   if (isHTMLImageElement(*element)) {
     if (loadError)
-      ensureFallbackContent();
+      toHTMLImageElement(element)->ensureCollapsedOrFallbackContent();
     else
       toHTMLImageElement(element)->ensurePrimaryContent();
   }
 
   if (isHTMLInputElement(*element)) {
     if (loadError)
-      ensureFallbackContent();
+      toHTMLInputElement(element)->ensureFallbackContent();
     else
       toHTMLInputElement(element)->ensurePrimaryContent();
   }
 
   if ((loadError || cachedImage->response().httpStatusCode() >= 400) &&
       isHTMLObjectElement(*element))
     toHTMLObjectElement(element)->renderFallbackContent();
 }
 
-void HTMLImageLoader::ensureFallbackContent() {
-  loadFallbackContentForElement(element());
-}
-
 }  // namespace blink