Add ImageResource update bitmap images api

Source/core/fetch/ImageResource.cpp

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller (mueller@kde.org)
     Copyright (C) 2002 Waldo Bastian (bastian@kde.org)
     Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
     Copyright (C) 2004, 2005, 2006, 2007 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
@@ skipping 362 matching lines @@
                 memoryCache()->remove(this);
             return;
         }
 
         // It would be nice to only redraw the decoded band of the image, but with the current design
         // (decoding delayed until painting) that seems hard.
         notifyObservers();
     }
 }
 
+void ImageResource::updateBitmapImages(HashSet<ImageResource*>& images, bool redecodeImages)
+{
+    for (HashSet<ImageResource*>::iterator it = images.begin(); it != images.end(); ++it) {
+        ImageResource* imageResource = *it;
+        if (!imageResource->hasImage() || imageResource->image()->isNull())
+            continue;
+        BitmapImage* image = toBitmapImage(imageResource->image());
+        if (redecodeImages)
+            image->resetDecoder();
+        imageResource->updateImage(image->isAllDataReceived());
+    }
+}
+
 void ImageResource::finishOnePart()
 {
     if (m_loadingMultipartContent)
         clear();
     updateImage(true);
     if (m_loadingMultipartContent)
         m_data.clear();
     Resource::finishOnePart();
 }
 
@@ skipping 74 matching lines @@
 bool ImageResource::isAccessAllowed(SecurityOrigin* securityOrigin)
 {
     if (!image()->currentFrameHasSingleSecurityOrigin())
         return false;
     if (passesAccessControlCheck(securityOrigin))
         return true;
     return !securityOrigin->taintsCanvas(response().url());
 }
 
 } // namespace blink