Schedule image resource downloads by decreasing visual impact - Blink Side

Source/core/rendering/RenderBlock.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. 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 1308 matching lines @@
     // with empty rects. Use LayoutRect::contains in that case.
     bool isVisible;
     if (!objectBounds.isEmpty())
         isVisible =  viewBounds.intersects(objectBounds);
     else
         isVisible = viewBounds.contains(objectBounds);
 
     ResourceLoadPriorityOptimizer::VisibilityStatus status = isVisible ?
         ResourceLoadPriorityOptimizer::Visible : ResourceLoadPriorityOptimizer::NotVisible;
 
+    LayoutRect screenArea;
+    if (!objectBounds.isEmpty()) {
+        screenArea = viewBounds;
+        screenArea.intersect(objectBounds);
+    }
+
     for (Vector<ImageResource*>::iterator it = images.begin(), end = images.end(); it != end; ++it)
-        ResourceLoadPriorityOptimizer::resourceLoadPriorityOptimizer()->notifyImageResourceVisibility(*it, status);
+        ResourceLoadPriorityOptimizer::resourceLoadPriorityOptimizer()->notifyImageResourceVisibility(*it, status, screenArea);
 
     return true;
 }
 
 void RenderBlock::relayoutShapeDescendantIfMoved(RenderBlock* child, LayoutSize offset)
 {
     LayoutUnit left = isHorizontalWritingMode() ? offset.width() : offset.height();
     if (!left || !child || child->shapeInsideInfo() || !layoutShapeInsideInfo())
         return;
     // Propagate layout markers only up to the child, as we are still in the middle
@@ skipping 4303 matching lines @@
 void RenderBlock::showLineTreeAndMark(const InlineBox* markedBox1, const char* markedLabel1, const InlineBox* markedBox2, const char* markedLabel2, const RenderObject* obj) const
 {
     showRenderObject();
     for (const RootInlineBox* root = firstRootBox(); root; root = root->nextRootBox())
         root->showLineTreeAndMark(markedBox1, markedLabel1, markedBox2, markedLabel2, obj, 1);
 }
 
 #endif
 
 } // namespace WebCore