Remove unused prefs/api/resource for setPageEncoding

third_party/WebKit/Source/core/loader/DocumentLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 446 matching lines @@
         if ((status < 200 || status >= 300) && m_frame->owner())
             m_frame->owner()->renderFallbackContent();
     }
 }
 
 void DocumentLoader::ensureWriter(const AtomicString& mimeType, const KURL& overridingURL)
 {
     if (m_writer)
         return;
 
-    const AtomicString& encoding = m_frame->host()->overrideEncoding().isNull() ? response().textEncodingName() : m_frame->host()->overrideEncoding();
+    const AtomicString& encoding = response().textEncodingName();
 
     // Prepare a DocumentInit before clearing the frame, because it may need to
     // inherit an aliased security context.
     Document* owner = nullptr;
     // TODO(dcheng): This differs from the behavior of both IE and Firefox: the
     // origin is inherited from the document that loaded the URL.
     if (shouldInheritSecurityOriginFromOwner(url())) {
         Frame* ownerFrame = m_frame->tree().parent();
         if (!ownerFrame)
             ownerFrame = m_frame->loader().opener();
@@ skipping 253 matching lines @@
 {
     m_writer = createWriterFor(init, mimeType(), m_writer ? m_writer->encoding() : emptyAtom, true, ForceSynchronousParsing);
     if (!source.isNull())
         m_writer->appendReplacingData(source);
     endWriting(m_writer.get());
 }
 
 DEFINE_WEAK_IDENTIFIER_MAP(DocumentLoader);
 
 } // namespace blink