Move custom element code to core/dom/custom/

Source/core/dom/custom/CustomElementDefinition.h

Index: Source/core/dom/custom/CustomElementDefinition.h
diff --git a/Source/core/dom/CustomElementDefinition.h b/Source/core/dom/custom/CustomElementDefinition.h
similarity index 93%
rename from Source/core/dom/CustomElementDefinition.h
rename to Source/core/dom/custom/CustomElementDefinition.h
index 96aa3dcbde718f53fb45ea90af0281a861cc50cc..601f671a148640fcbd75fafb7c3d95564da42b3a 100644
--- a/Source/core/dom/CustomElementDefinition.h
+++ b/Source/core/dom/custom/CustomElementDefinition.h
@@ -31,8 +31,8 @@
 #ifndef CustomElementDefinition_h
 #define CustomElementDefinition_h
 
-#include "core/dom/CustomElementDescriptor.h"
-#include "core/dom/CustomElementLifecycleCallbacks.h"
+#include "core/dom/custom/CustomElementDescriptor.h"
+#include "core/dom/custom/CustomElementLifecycleCallbacks.h"
 #include "wtf/Forward.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
@@ -43,7 +43,7 @@ class CustomElementDefinition : public RefCounted<CustomElementDefinition> {
 public:
     static PassRefPtr<CustomElementDefinition> create(const CustomElementDescriptor&, PassRefPtr<CustomElementLifecycleCallbacks>);
 
-    virtual ~CustomElementDefinition() {}
+    virtual ~CustomElementDefinition() { }
 
     const CustomElementDescriptor& descriptor() const { return m_descriptor; }
     CustomElementLifecycleCallbacks* callbacks() const { return m_callbacks.get(); }