Attempt to move USING_SYSTEM_ICU version of TextCodecICU to new blink style.

third_party/WebKit/Source/platform/wtf/text/TextCodecICU.h

 /*
  * Copyright (C) 2004, 2006, 2007, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov <ap@nypop.com>
  *
  * 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.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 47 matching lines @@
                 bool& saw_error) override;
   CString Encode(const UChar*, size_t length, UnencodableHandling) override;
   CString Encode(const LChar*, size_t length, UnencodableHandling) override;
 
   template <typename CharType>
   CString EncodeCommon(const CharType*, size_t length, UnencodableHandling);
   CString EncodeInternal(const TextCodecInput&, UnencodableHandling);
 
   void CreateICUConverter() const;
   void ReleaseICUConverter() const;
-#if defined(USING_SYSTEM_ICU)
-  bool needsGBKFallbacks() const { return m_needsGBKFallbacks; }
-  void setNeedsGBKFallbacks(bool needsFallbacks) {
-    m_needsGBKFallbacks = needsFallbacks;
-  }
-#endif

[Nico, 2017/05/10 18:14:01]

Nothing calls these.

 
   int DecodeToBuffer(UChar* buffer,
                      UChar* buffer_limit,
                      const char*& source,
                      const char* source_limit,
                      int32_t* offsets,
                      bool flush,
                      UErrorCode&);
 
   TextEncoding encoding_;
-  mutable UConverter* converter_icu_;
+  mutable UConverter* converter_icu_ = nullptr;
 #if defined(USING_SYSTEM_ICU)
-  mutable bool m_needsGBKFallbacks;
+  mutable bool needs_gbk_fallbacks_ = false;
 #endif
 
   FRIEND_TEST_ALL_PREFIXES(TextCodecICUTest, IgnorableCodePoint);
   FRIEND_TEST_ALL_PREFIXES(TextCodecICUTest, UTF32AndQuestionMarks);
   FRIEND_TEST_ALL_PREFIXES(TextCodecICUTest, UTF32Aliases);
 };
 
 struct ICUConverterWrapper {
   WTF_MAKE_NONCOPYABLE(ICUConverterWrapper);
   USING_FAST_MALLOC(ICUConverterWrapper);
 
  public:
   ICUConverterWrapper() : converter(0) {}
   ~ICUConverterWrapper();
 
   UConverter* converter;
 };
 
 }  // namespace WTF
 
 #endif  // TextCodecICU_h