Always give RenderParts a RenderLayer.

Source/core/rendering/RenderEmbeddedObject.cpp

Index: Source/core/rendering/RenderEmbeddedObject.cpp
diff --git a/Source/core/rendering/RenderEmbeddedObject.cpp b/Source/core/rendering/RenderEmbeddedObject.cpp
index a4aa641643af09ebcd0395a9f07376d804dda4fd..08e3276a8af9aabac22e0d447196ca1ed4f211ea 100644
--- a/Source/core/rendering/RenderEmbeddedObject.cpp
+++ b/Source/core/rendering/RenderEmbeddedObject.cpp
@@ -66,11 +66,12 @@ RenderEmbeddedObject::~RenderEmbeddedObject()
 
 LayerType RenderEmbeddedObject::layerTypeRequired() const
 {
-    LayerType type = RenderPart::layerTypeRequired();
-    if (type != NoLayer)
-        return type;
-
-    return requiresAcceleratedCompositing() ? NormalLayer : NoLayer;
+    // This just use RenderPart::layerTypeRequired, because RenderLayerCompositor

[esprehn, 2014/06/03 03:49:17]

typo, -> uses

[esprehn, 2014/06/03 03:49:17]

typo, -> uses

+    // doesn't loop through RenderEmbeddedObjects the way it does frames in order
+    // to update the self painting bit on their RenderLayer.
+    if (requiresAcceleratedCompositing())
+        return NormalLayer;
+    return RenderPart::layerTypeRequired();
 }
 
 static String unavailablePluginReplacementText(Node* node, RenderEmbeddedObject::PluginUnavailabilityReason pluginUnavailabilityReason)