[Fetch] Always use utf-8 for decoding in text()

third_party/WebKit/Source/modules/fetch/FetchDataLoader.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "modules/fetch/FetchDataLoader.h"
 
 #include "core/html/parser/TextResourceDecoder.h"
 #include "wtf/ArrayBufferBuilder.h"
 #include "wtf/text/StringBuilder.h"
@@ skipping 200 matching lines @@
         visitor->trace(m_client);
     }
 
 protected:
     void start(FetchDataConsumerHandle* handle, FetchDataLoader::Client* client) override
     {
         ASSERT(!m_client);
         ASSERT(!m_decoder);
         ASSERT(!m_reader);
         m_client = client;
-        m_decoder = TextResourceDecoder::create("text/plain", UTF8Encoding());
+        m_decoder = TextResourceDecoder::createAlwaysUseUTF8ForText();
         m_reader = handle->obtainReader(this);
     }
 
     void didGetReadable() override
     {
         ASSERT(m_client);
         ASSERT(m_decoder);
         ASSERT(m_reader);
 
         while (true) {
@@ skipping 161 matching lines @@
 {
     return new FetchDataLoaderAsString();
 }
 
 FetchDataLoader* FetchDataLoader::createLoaderAsStream(Stream* outStream)
 {
     return new FetchDataLoaderAsStream(outStream);
 }
 
 } // namespace blink