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

third_party/WebKit/Source/platform/network/HTTPParsersTest.cpp

 // Copyright 2014 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 "platform/network/HTTPParsers.h"
 
 #include "platform/heap/Handle.h"
 #include "platform/network/ResourceResponse.h"
 #include "platform/weborigin/Suborigin.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 176 matching lines @@
                           AtomicString("text/html , text/plain")));
   EXPECT_EQ(textHtml, extractMIMETypeFromMediaType(
                           AtomicString("text/html\t,\ttext/plain")));
   EXPECT_EQ(textHtml, extractMIMETypeFromMediaType(AtomicString(
                           "text/html,text/plain;charset=iso-8859-1")));
 
   // Preserves case.
   EXPECT_EQ("tExt/hTMl",
             extractMIMETypeFromMediaType(AtomicString("tExt/hTMl")));
 
-  EXPECT_EQ(emptyString(),
+  EXPECT_EQ(emptyString,
             extractMIMETypeFromMediaType(AtomicString(", text/html")));
-  EXPECT_EQ(emptyString(),
+  EXPECT_EQ(emptyString,
             extractMIMETypeFromMediaType(AtomicString("; text/html")));
 
   // If no normalization is required, the same AtomicString should be returned.
   const AtomicString& passthrough = extractMIMETypeFromMediaType(textHtml);
   EXPECT_EQ(textHtml.impl(), passthrough.impl());
 }
 
 TEST(HTTPParsersTest, ExtractMIMETypeFromMediaTypeInvalidInput) {
   // extractMIMETypeFromMediaType() returns the string before the first
   // semicolon after trimming OWSes at the head and the tail even if the
@@ skipping 284 matching lines @@
       parseMultipartHeadersFromBody(data, strlen(data), &response, &end);
 
   EXPECT_TRUE(result);
   EXPECT_EQ(strlen(data), end);
   EXPECT_EQ("text/html; charset=utf-8",
             response.httpHeaderField("content-type"));
   EXPECT_EQ("utf-8", response.textEncodingName());
 }
 
 }  // namespace blink