Revert of Move encoding module to oilpan

Source/modules/encoding/TextEncoder.cpp

Index: Source/modules/encoding/TextEncoder.cpp
diff --git a/Source/modules/encoding/TextEncoder.cpp b/Source/modules/encoding/TextEncoder.cpp
index 255ede39336e4b4ab0894c7f6cc78afbdb80baf5..1a26de62da91172943bc0777b555554af6340709 100644
--- a/Source/modules/encoding/TextEncoder.cpp
+++ b/Source/modules/encoding/TextEncoder.cpp
@@ -39,9 +39,7 @@
 
 namespace WebCore {
 
-DEFINE_GC_INFO(TextEncoder);
-
-PassRefPtrWillBeRawPtr<TextEncoder> TextEncoder::create(const String& utfLabel, ExceptionState& exceptionState)
+PassRefPtr<TextEncoder> TextEncoder::create(const String& utfLabel, ExceptionState& exceptionState)
 {
     const String& encodingLabel = utfLabel.isNull() ? String("utf-8") : utfLabel;
 
@@ -57,7 +55,7 @@
         return 0;
     }
 
-    return adoptRefWillBeNoop(new TextEncoder(encoding.name()));
+    return adoptRef(new TextEncoder(encoding.name()));
 }
 
 TextEncoder::TextEncoder(const String& encoding)