Use C++11 range-based loop in core/fetch

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 06bf4db45e6d619512dd6d3fa606540fa384557c..ccae349353b12b74acf05b23fc00450b64d64609 100644
--- a/Source/core/fetch/ResourceLoadPriorityOptimizer.cpp
+++ b/Source/core/fetch/ResourceLoadPriorityOptimizer.cpp
@@ -83,11 +83,9 @@ void ResourceLoadPriorityOptimizer::updateAllImageResourcePriorities()
     m_imageResources.clear();
 
     Vector<RenderObject*> objectsToRemove;
-    for (RenderObjectSet::iterator it = m_objects.begin(); it != m_objects.end(); ++it) {
-        RenderObject* obj = *it;
-        if (!obj->updateImageLoadingPriorities()) {
-            objectsToRemove.append(obj);
-        }
+    for (const auto& renderObject : m_objects) {
+        if (!renderObject->updateImageLoadingPriorities())
+            objectsToRemove.append(renderObject);
     }
     m_objects.removeAll(objectsToRemove);
 
@@ -96,13 +94,13 @@ void ResourceLoadPriorityOptimizer::updateAllImageResourcePriorities()
 
 void ResourceLoadPriorityOptimizer::updateImageResourcesWithLoadPriority()
 {
-    for (ImageResourceMap::iterator it = m_imageResources.begin(); it != m_imageResources.end(); ++it) {
-        ResourceLoadPriority priority = it->value->status == Visible ?
+    for (const auto& resource : m_imageResources) {
+        ResourceLoadPriority priority = resource.value->status == Visible ?
             ResourceLoadPriorityLow : ResourceLoadPriorityVeryLow;
 
-        if (priority != it->value->imageResource->resourceRequest().priority()) {
-            it->value->imageResource->mutableResourceRequest().setPriority(priority, it->value->screenArea);
-            it->value->imageResource->didChangePriority(priority, it->value->screenArea);
+        if (priority != resource.value->imageResource->resourceRequest().priority()) {
+            resource.value->imageResource->mutableResourceRequest().setPriority(priority, resource.value->screenArea);
+            resource.value->imageResource->didChangePriority(priority, resource.value->screenArea);
         }
     }
     m_imageResources.clear();