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

third_party/WebKit/Source/wtf/text/WTFStringTest.cpp

 /*
  * Copyright (C) 2012 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 30 matching lines @@
 }
 
 TEST(StringTest, ASCII) {
   CString output;
 
   // Null String.
   output = String().ascii();
   EXPECT_STREQ("", output.data());
 
   // Empty String.
-  output = emptyString().ascii();
+  output = emptyString.ascii();
   EXPECT_STREQ("", output.data());
 
   // Regular String.
   output = String("foobar").ascii();
   EXPECT_STREQ("foobar", output.data());
 }
 
 namespace {
 
 void testNumberToStringECMAScript(double number, const char* reference) {
@@ skipping 420 matching lines @@
       CString("\"\\u0008\\t\\n\\u000B\\u000C\\r\\u000E\\u000F\""),
       toCStringThroughPrinter(String("\x08\x09\x0A\x0B\x0C\x0D\x0E\x0F", 8)));
   EXPECT_EQ(
       CString("\"\\u0010\\u0011\\u0012\\u0013\\u0014\\u0015\\u0016\\u0017\""),
       toCStringThroughPrinter(String("\x10\x11\x12\x13\x14\x15\x16\x17", 8)));
   EXPECT_EQ(
       CString("\"\\u0018\\u0019\\u001A\\u001B\\u001C\\u001D\\u001E\\u001F\""),
       toCStringThroughPrinter(String("\x18\x19\x1A\x1B\x1C\x1D\x1E\x1F", 8)));
   EXPECT_EQ(CString("\"\\u007F\\u0080\\u0081\""),
             toCStringThroughPrinter("\x7F\x80\x81"));
-  EXPECT_EQ(CString("\"\""), toCStringThroughPrinter(emptyString()));
+  EXPECT_EQ(CString("\"\""), toCStringThroughPrinter(emptyString));
   EXPECT_EQ(CString("<null>"), toCStringThroughPrinter(String()));
 
   static const UChar unicodeSample[] = {0x30C6, 0x30B9,
                                         0x30C8};  // "Test" in Japanese.
   EXPECT_EQ(CString("\"\\u30C6\\u30B9\\u30C8\""),
             toCStringThroughPrinter(
                 String(unicodeSample, WTF_ARRAY_LENGTH(unicodeSample))));
 }
 
 }  // namespace WTF