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

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

Index: third_party/WebKit/Source/modules/fetch/FetchDataLoader.cpp
diff --git a/third_party/WebKit/Source/modules/fetch/FetchDataLoader.cpp b/third_party/WebKit/Source/modules/fetch/FetchDataLoader.cpp
index 690da890e9a61eb2698586f981281f490ca75bb9..5deef903b7b39dfac68884802bd770905a6c4536 100644
--- a/third_party/WebKit/Source/modules/fetch/FetchDataLoader.cpp
+++ b/third_party/WebKit/Source/modules/fetch/FetchDataLoader.cpp
@@ -218,7 +218,7 @@ protected:
         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);
     }