Revert of Move encoding module to oilpan

Source/modules/encoding/TextEncoder.h

Index: Source/modules/encoding/TextEncoder.h
diff --git a/Source/modules/encoding/TextEncoder.h b/Source/modules/encoding/TextEncoder.h
index de007b29d14cf726e06c3ac88aecb8c383b14cf9..752198d6ef8aa3455dcf9a7a10e077e6736b59df 100644
--- a/Source/modules/encoding/TextEncoder.h
+++ b/Source/modules/encoding/TextEncoder.h
@@ -31,7 +31,6 @@
 #ifndef TextEncoder_h
 #define TextEncoder_h
 
-#include "heap/Handle.h"
 #include "wtf/ArrayBufferView.h"
 #include "wtf/RefCounted.h"
 #include "wtf/Uint8Array.h"
@@ -44,17 +43,17 @@
 class Dictionary;
 class ExceptionState;
 
-class TextEncoder FINAL : public RefCountedWillBeGarbageCollectedFinalized<TextEncoder> {
-    DECLARE_GC_INFO;
+class TextEncoder FINAL : public RefCounted<TextEncoder> {
 public:
-    static PassRefPtrWillBeRawPtr<TextEncoder> create(const String& utfLabel, ExceptionState&);
+    static PassRefPtr<TextEncoder> create(const String& utfLabel, ExceptionState&);
     ~TextEncoder();
 
     // Implement the IDL
     String encoding() const;
     PassRefPtr<Uint8Array> encode(const String&, const Dictionary&);
 
-    void trace(Visitor*) { }
+    using RefCounted<TextEncoder>::ref;
+    using RefCounted<TextEncoder>::deref;
 
 private:
     TextEncoder(const String& encoding);