Revert of Move encoding module to oilpan

Source/modules/encoding/TextDecoder.cpp

Index: Source/modules/encoding/TextDecoder.cpp
diff --git a/Source/modules/encoding/TextDecoder.cpp b/Source/modules/encoding/TextDecoder.cpp
index 3e587473b1984dcf8f263eb9e8e2411462c02a60..06bf788e0f7aacde318748d8c796432d20bd9c67 100644
--- a/Source/modules/encoding/TextDecoder.cpp
+++ b/Source/modules/encoding/TextDecoder.cpp
@@ -38,9 +38,7 @@
 
 namespace WebCore {
 
-DEFINE_GC_INFO(TextDecoder);
-
-PassRefPtrWillBeRawPtr<TextDecoder> TextDecoder::create(const String& label, const Dictionary& options, ExceptionState& exceptionState)
+PassRefPtr<TextDecoder> TextDecoder::create(const String& label, const Dictionary& options, ExceptionState& exceptionState)
 {
     const String& encodingLabel = label.isNull() ? String("utf-8") : label;
 
@@ -53,7 +51,7 @@
     bool fatal = false;
     options.get("fatal", fatal);
 
-    return adoptRefWillBeNoop(new TextDecoder(encoding.name(), fatal));
+    return adoptRef(new TextDecoder(encoding.name(), fatal));
 }