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

third_party/WebKit/Source/core/css/parser/CSSParserContext.cpp

 // 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.
 
 #include "core/css/parser/CSSParserContext.h"
 
 #include "core/css/CSSStyleSheet.h"
 #include "core/css/StyleSheetContents.h"
 #include "core/frame/Settings.h"
 #include "core/frame/csp/ContentSecurityPolicy.h"
@@ skipping 23 matching lines @@
       other->m_baseURL, other->m_charset, other->m_mode, other->m_matchMode,
       other->m_profile, other->m_referrer, other->m_isHTMLDocument,
       other->m_useLegacyBackgroundSizeShorthandBehavior,
       other->m_shouldCheckContentSecurityPolicy, useCounter);
 }
 
 // static
 CSSParserContext* CSSParserContext::create(CSSParserMode mode,
                                            SelectorProfile profile,
                                            UseCounter* useCounter) {
-  return new CSSParserContext(KURL(), emptyString(), mode, mode, profile,
+  return new CSSParserContext(KURL(), emptyString, mode, mode, profile,
                               Referrer(), false, false,
                               DoNotCheckContentSecurityPolicy, useCounter);
 }
 
 // static
 CSSParserContext* CSSParserContext::create(const Document& document,
                                            UseCounter* useCounter) {
-  return CSSParserContext::create(document, KURL(), emptyString(),
-                                  DynamicProfile, useCounter);
+  return CSSParserContext::create(document, KURL(), emptyString, DynamicProfile,
+                                  useCounter);
 }
 
 // static
 CSSParserContext* CSSParserContext::create(const Document& document,
                                            const KURL& baseURLOverride,
                                            const String& charset,
                                            SelectorProfile profile,
                                            UseCounter* useCounter) {
   const KURL baseURL =
       baseURLOverride.isNull() ? document.baseURL() : baseURLOverride;
@@ skipping 68 matching lines @@
 
 KURL CSSParserContext::completeURL(const String& url) const {
   if (url.isNull())
     return KURL();
   if (charset().isEmpty())
     return KURL(baseURL(), url);
   return KURL(baseURL(), url, charset());
 }
 
 }  // namespace blink