Replace StringImpl::empty{16Bit}() with a static member

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

 // Copyright 2016 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.
 
 #ifndef WTF_StringView_h
 #define WTF_StringView_h
 
 #include "wtf/Allocator.h"
 #include "wtf/GetPtr.h"
 #if DCHECK_IS_ON()
@@ skipping 50 matching lines @@
   inline StringView(const String&, unsigned offset);
   inline StringView(const String&);
 
   // From an AtomicString, implemented in AtomicString.h
   inline StringView(const AtomicString&, unsigned offset, unsigned length);
   inline StringView(const AtomicString&, unsigned offset);
   inline StringView(const AtomicString&);
 
   // From a literal string or LChar buffer:
   StringView(const LChar* chars, unsigned length)
-      : m_impl(StringImpl::empty()), m_characters8(chars), m_length(length) {}
+      : m_impl(StringImpl::empty), m_characters8(chars), m_length(length) {}
   StringView(const char* chars, unsigned length)
       : StringView(reinterpret_cast<const LChar*>(chars), length) {}
   StringView(const LChar* chars)
       : StringView(chars,
                    chars ? strlen(reinterpret_cast<const char*>(chars)) : 0) {}
   StringView(const char* chars)
       : StringView(reinterpret_cast<const LChar*>(chars)) {}
 
   // From a wide literal string or UChar buffer.
   StringView(const UChar* chars, unsigned length)
-      : m_impl(StringImpl::empty16Bit()),
+      : m_impl(StringImpl::empty16Bit),
         m_characters16(chars),
         m_length(length) {}
   StringView(const UChar* chars);
   StringView(const char16_t* chars)
       : StringView(reinterpret_cast<const UChar*>(chars)) {}
 
 #if DCHECK_IS_ON()
   ~StringView();
 #endif
 
@@ skipping 103 matching lines @@
 
 inline StringView::StringView(StringImpl& impl,
                               unsigned offset,
                               unsigned length) {
   set(impl, offset, length);
 }
 
 inline void StringView::clear() {
   m_length = 0;
   m_bytes = nullptr;
-  m_impl = StringImpl::empty();  // mark as 8 bit.
+  m_impl = StringImpl::empty;  // mark as 8 bit.
 }
 
 inline void StringView::set(const StringImpl& impl,
                             unsigned offset,
                             unsigned length) {
   SECURITY_DCHECK(offset + length <= impl.length());
   m_length = length;
   m_impl = const_cast<StringImpl*>(&impl);
   if (impl.is8Bit())
     m_characters8 = impl.characters8() + offset;
@@ skipping 46 matching lines @@
 }
 
 }  // namespace WTF
 
 using WTF::StringView;
 using WTF::equalIgnoringASCIICase;
 using WTF::equalIgnoringCase;
 using WTF::isAllSpecialCharacters;
 
 #endif