Remove dedicated TextCodecUTF16

third_party/WebKit/Source/wtf/BUILD.gn

 # Copyright 2014 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.
 
 assert(!is_ios)
 
 import("//testing/test.gni")
 import("//third_party/WebKit/Source/config.gni")
 
 visibility = [
@@ skipping 192 matching lines @@
     "text/StringUTF8Adaptor.h",
     "text/StringView.cpp",
     "text/StringView.h",
     "text/TextCodec.cpp",
     "text/TextCodec.h",
     "text/TextCodecASCIIFastPath.h",
     "text/TextCodecICU.cpp",
     "text/TextCodecLatin1.cpp",
     "text/TextCodecReplacement.cpp",
     "text/TextCodecReplacement.h",
-    "text/TextCodecUTF16.cpp",
     "text/TextCodecUTF8.cpp",
     "text/TextCodecUTF8.h",
     "text/TextCodecUserDefined.cpp",
     "text/TextEncoding.cpp",
     "text/TextEncodingRegistry.cpp",
     "text/TextPosition.cpp",
     "text/TextPosition.h",
     "text/UTF8.cpp",
     "text/UTF8.h",
     "text/Unicode.h",
@@ skipping 132 matching lines @@
   configs += [ "//third_party/WebKit/Source:config" ]
 
   deps = [
     ":wtf",
     "//base",
     "//base/test:test_support",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }