Defer late and async scripts

Source/core/fetch/ResourceLoadPriorityOptimizer.cpp

Index: Source/core/fetch/ResourceLoadPriorityOptimizer.cpp
diff --git a/Source/core/fetch/ResourceLoadPriorityOptimizer.cpp b/Source/core/fetch/ResourceLoadPriorityOptimizer.cpp
index bdb63a71b1211cd01ef717cd71c68dc97b7e5731..9b6535c7dedfff4f454652fcd33ec9a8041dda50 100644
--- a/Source/core/fetch/ResourceLoadPriorityOptimizer.cpp
+++ b/Source/core/fetch/ResourceLoadPriorityOptimizer.cpp
@@ -98,7 +98,7 @@ void ResourceLoadPriorityOptimizer::updateImageResourcesWithLoadPriority()
 {
     for (ImageResourceMap::iterator it = m_imageResources.begin(); it != m_imageResources.end(); ++it) {
         ResourceLoadPriority priority = it->value->status == Visible ?
-            ResourceLoadPriorityLow : ResourceLoadPriorityVeryLow;
+            ResourceLoadPriorityMedium : ResourceLoadPriorityVeryLow;
 
         if (priority != it->value->imageResource->resourceRequest().priority()) {
             it->value->imageResource->mutableResourceRequest().setPriority(priority, it->value->screenArea);