Raise the loading priority of in-viewport images.

Source/core/rendering/RenderObject.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 17 matching lines @@
 #include "core/rendering/RenderObject.h"
 
 #include "HTMLNames.h"
 #include "RuntimeEnabledFeatures.h"
 #include "core/accessibility/AXObjectCache.h"
 #include "core/animation/ActiveAnimations.h"
 #include "core/css/resolver/StyleResolver.h"
 #include "core/editing/EditingBoundary.h"
 #include "core/editing/FrameSelection.h"
 #include "core/editing/htmlediting.h"
+#include "core/fetch/ResourceLoader.h"
 #include "core/html/HTMLAnchorElement.h"
 #include "core/html/HTMLElement.h"
 #include "core/html/HTMLHtmlElement.h"
 #include "core/html/HTMLTableElement.h"
 #include "core/page/AutoscrollController.h"
 #include "core/page/EventHandler.h"
 #include "core/frame/Frame.h"
 #include "core/frame/FrameView.h"
 #include "core/page/Page.h"
 #include "core/page/Settings.h"
@@ skipping 2784 matching lines @@
     LayoutRectRecorder recorder(*this);
     RenderObject* child = firstChild();
     while (child) {
         child->layoutIfNeeded();
         ASSERT(!child->needsLayout());
         child = child->nextSibling();
     }
     clearNeedsLayout();
 }
 
+void RenderObject::didLayout(ResourceLoadPriorityOptimizer& priorityModifier)
+{
+    RenderObject* child = firstChild();
+    while (child) {
+        child->didLayout(priorityModifier);
+        child = child->nextSibling();
+    }
+}
+
+void RenderObject::didScroll(ResourceLoadPriorityOptimizer& priorityModifier)
+{
+    RenderObject* child = firstChild();
+    while (child) {
+        child->didScroll(priorityModifier);
+        child = child->nextSibling();
+    }
+}
+
 void RenderObject::forceLayout()
 {
     setSelfNeedsLayout(true);
     layout();
 }
 
 // FIXME: Does this do anything different than forceLayout given that we don't walk
 // the containing block chain. If not, we should change all callers to use forceLayout.
 void RenderObject::forceChildLayout()
 {
@@ skipping 515 matching lines @@
 {
     if (object1) {
         const WebCore::RenderObject* root = object1;
         while (root->parent())
             root = root->parent();
         root->showRenderTreeAndMark(object1, "*", object2, "-", 0);
     }
 }
 
 #endif