Schedule image resource downloads by decreasing visual impact - Blink Side

Source/core/fetch/ResourceFetcher.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) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
     Copyright (C) 2009 Torch Mobile Inc. http://www.torchmobile.com/
 
     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 627 matching lines @@
     if (!resource->hasClients())
         m_deadStatsRecorder.update(policy);
 
     if (policy != Use)
         resource->setIdentifier(createUniqueIdentifier());
 
     if (!request.forPreload() || policy != Use) {
         ResourceLoadPriority priority = loadPriority(type, request);
         if (priority != resource->resourceRequest().priority()) {
             resource->resourceRequest().setPriority(priority);
-            resource->didChangePriority(priority);
+            resource->didChangePriority(priority, 0);
         }
     }
 
     if (resourceNeedsLoad(resource.get(), request, policy)) {
         if (!shouldLoadNewResource(type)) {
             if (resource->inCache())
                 memoryCache()->remove(resource.get());
             return 0;
         }
 
@@ skipping 543 matching lines @@
 {
     m_pendingPreloads.clear();
 }
 
 void ResourceFetcher::didFinishLoading(const Resource* resource, double finishTime)
 {
     TRACE_EVENT_ASYNC_END0("net", "Resource", resource);
     context().dispatchDidFinishLoading(m_documentLoader, resource->identifier(), finishTime);
 }
 
-void ResourceFetcher::didChangeLoadingPriority(const Resource* resource, ResourceLoadPriority loadPriority)
+void ResourceFetcher::didChangeLoadingPriority(const Resource* resource, ResourceLoadPriority loadPriority, int intraPriorityValue)
 {
     TRACE_EVENT_ASYNC_STEP_INTO1("net", "Resource", resource, "ChangePriority", "priority", loadPriority);
-    context().dispatchDidChangeResourcePriority(resource->identifier(), loadPriority);
+    context().dispatchDidChangeResourcePriority(resource->identifier(), loadPriority, intraPriorityValue);
 }
 
 void ResourceFetcher::didFailLoading(const Resource* resource, const ResourceError& error)
 {
     TRACE_EVENT_ASYNC_END0("net", "Resource", resource);
     context().dispatchDidFail(m_documentLoader, resource->identifier(), error);
 }
 
 void ResourceFetcher::willSendRequest(unsigned long identifier, ResourceRequest& request, const ResourceResponse& redirectResponse, const FetchInitiatorInfo& initiatorInfo)
 {
@@ skipping 187 matching lines @@
     case Revalidate:
         ++m_revalidateCount;
         return;
     case Use:
         ++m_useCount;
         return;
     }
 }
 
 }