Replace WTF::emptyString{16Bit}() with a static global

third_party/WebKit/Source/core/css/parser/CSSParserContext.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 CSSParserContext_h
 #define CSSParserContext_h
 
 #include "core/CoreExport.h"
 #include "core/css/parser/CSSParserMode.h"
 #include "platform/loader/fetch/ResourceLoaderOptions.h"
@@ skipping 27 matching lines @@
 
   static CSSParserContext* create(CSSParserMode,
                                   SelectorProfile = DynamicProfile,
                                   UseCounter* = nullptr);
   // FIXME: We shouldn't need the UseCounter argument as we could infer it from
   // the Document but some callers want to disable use counting (e.g. the
   // WebInspector).
   static CSSParserContext* create(const Document&, UseCounter*);
   static CSSParserContext* create(const Document&,
                                   const KURL& baseURLOverride = KURL(),
-                                  const String& charset = emptyString(),
+                                  const String& charset = emptyString,
                                   SelectorProfile = DynamicProfile,
                                   UseCounter* = nullptr);
 
   bool operator==(const CSSParserContext&) const;
   bool operator!=(const CSSParserContext& other) const {
     return !(*this == other);
   }
 
   CSSParserMode mode() const { return m_mode; }
   CSSParserMode matchMode() const { return m_matchMode; }
@@ skipping 55 matching lines @@
   ContentSecurityPolicyDisposition m_shouldCheckContentSecurityPolicy;
 
   UseCounter* m_useCounter;
 };
 
 CORE_EXPORT const CSSParserContext* strictCSSParserContext();
 
 }  // namespace blink
 
 #endif  // CSSParserContext_h