Use StringView for equalIgnoringCase.

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

Index: third_party/WebKit/Source/wtf/text/StringImpl.h
diff --git a/third_party/WebKit/Source/wtf/text/StringImpl.h b/third_party/WebKit/Source/wtf/text/StringImpl.h
index a95a0d9d2cf4234abf86ae9d8b52bb744fa03eec..18224391cac5cd92484f7c87c6eeeca55f04558c 100644
--- a/third_party/WebKit/Source/wtf/text/StringImpl.h
+++ b/third_party/WebKit/Source/wtf/text/StringImpl.h
@@ -477,21 +477,17 @@ ALWAYS_INLINE bool equal(const LChar* a, const UChar* b, unsigned length)
 
 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 LChar* a, const UChar* b, unsigned length)
+{
+    return equalIgnoringCase(b, a, length);
+}
 inline bool equalIgnoringCase(const UChar* a, const UChar* b, int length)
 {
     ASSERT(length >= 0);
     return !Unicode::umemcasecmp(a, b, length);
 }
-WTF_EXPORT bool equalIgnoringCaseNonNull(const StringImpl*, const StringImpl*);
 
 WTF_EXPORT bool equalIgnoringNullity(StringImpl*, StringImpl*);