Fix Resource Priorities and Scheduling (Blink Side)

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 721386ed1f684e72d47d52ed423ce3482c1c7656..a787e1420242ffaf0035a7cdd9a4f163ce5e3135 100644
--- a/Source/core/fetch/ResourceLoadPriorityOptimizer.cpp
+++ b/Source/core/fetch/ResourceLoadPriorityOptimizer.cpp
@@ -30,6 +30,8 @@
 
 #include "config.h"
 #include "core/fetch/ResourceLoadPriorityOptimizer.h"
+
+#include "core/fetch/ResourceLoader.h"
 #include "core/layout/LayoutObject.h"
 #include "platform/TraceEvent.h"
 
@@ -98,6 +100,11 @@ void ResourceLoadPriorityOptimizer::updateImageResourcesWithLoadPriority()
         ResourceLoadPriority priority = resource.value->status == Visible ?
             ResourceLoadPriorityLow : ResourceLoadPriorityVeryLow;
 
+        if (resource.value->imageResource->loader() && resource.value->imageResource->loader()->shouldUseIncreasedPriorities()) {
+            priority = resource.value->status == Visible ?
+                ResourceLoadPriorityHigh : ResourceLoadPriorityLow;
+        }
+
         if (priority != resource.value->imageResource->resourceRequest().priority()) {
             resource.value->imageResource->mutableResourceRequest().setPriority(priority, resource.value->screenArea);
             resource.value->imageResource->didChangePriority(priority, resource.value->screenArea);