Use StringView for equalIgnoringCase.

third_party/WebKit/Source/wtf/text/StringImpl.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 459 matching lines @@
 {
     for (unsigned i = 0; i < length; ++i) {
         if (a[i] != b[i])
             return false;
     }
     return true;
 }
 
 ALWAYS_INLINE bool equal(const UChar* a, const LChar* b, unsigned length) { return equal(b, a, length); }
 
-WTF_EXPORT bool equalIgnoringCase(const StringImpl*, const StringImpl*);
-WTF_EXPORT bool equalIgnoringCase(const StringImpl*, const LChar*);
-inline bool equalIgnoringCase(const LChar* a, const StringImpl* b) { return equalIgnoringCase(b, a); }
 WTF_EXPORT bool equalIgnoringCase(const LChar*, const LChar*, unsigned length);
 WTF_EXPORT bool equalIgnoringCase(const UChar*, const LChar*, unsigned length);
-inline bool equalIgnoringCase(const UChar* a, const char* b, unsigned length) { return equalIgnoringCase(a, reinterpret_cast<const LChar*>(b), length); }
-inline bool equalIgnoringCase(const LChar* a, const UChar* b, unsigned length) { return equalIgnoringCase(b, a, length); }
-inline bool equalIgnoringCase(const char* a, const UChar* b, unsigned length) { return equalIgnoringCase(b, reinterpret_cast<const LChar*>(a), length); }
-inline bool equalIgnoringCase(const char* a, const LChar* b, unsigned length) { return equalIgnoringCase(b, reinterpret_cast<const LChar*>(a), length); }
-inline bool equalIgnoringCase(const UChar* a, const UChar* b, int length)
+inline bool equalIgnoringCase(const LChar* a, const UChar* b, unsigned length)
 {
-    ASSERT(length >= 0);
-    return !Unicode::umemcasecmp(a, b, length);
+    return equalIgnoringCase(b, a, length);
 }
-WTF_EXPORT bool equalIgnoringCaseNonNull(const StringImpl*, const StringImpl*);
+
+WTF_EXPORT bool equalIgnoringCase(const UChar*, const UChar*, unsigned length);
 
 WTF_EXPORT bool equalIgnoringNullity(StringImpl*, StringImpl*);
 
 template<typename CharacterTypeA, typename CharacterTypeB>
 inline bool equalIgnoringASCIICase(const CharacterTypeA* a, const CharacterTypeB* b, unsigned length)
 {
     for (unsigned i = 0; i < length; ++i) {
         if (toASCIILower(a[i]) != toASCIILower(b[i]))
             return false;
     }
@@ skipping 215 matching lines @@
 using WTF::StringImpl;
 using WTF::TextCaseASCIIInsensitive;
 using WTF::TextCaseInsensitive;
 using WTF::TextCaseSensitive;
 using WTF::TextCaseSensitivity;
 using WTF::equal;
 using WTF::equalNonNull;
 using WTF::lengthOfNullTerminatedString;
 
 #endif