Defer computing localeForHan until needed

third_party/WebKit/Source/platform/fonts/AcceptLanguagesResolverTest.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 "platform/fonts/AcceptLanguagesResolver.h"
 
 #include "platform/LayoutLocale.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace blink {
 
 TEST(AcceptLanguagesResolverTest, AcceptLanguagesChanged)
 {
     struct {
         const char* acceptLanguages;
         UScriptCode script;
         const char* locale;
     } tests[] = {
         // Non-Han script cases.
+        { nullptr, USCRIPT_COMMON, nullptr },
         { "", USCRIPT_COMMON, nullptr },
         { "en-US", USCRIPT_COMMON, nullptr },
         { ",en-US", USCRIPT_COMMON, nullptr },
 
         // Single value cases.
         { "ja-JP", USCRIPT_KATAKANA_OR_HIRAGANA, "ja-jp" },
         { "ko-KR", USCRIPT_HANGUL, "ko-kr" },
         { "zh-CN", USCRIPT_SIMPLIFIED_HAN, "zh-Hans" },
         { "zh-HK", USCRIPT_TRADITIONAL_HAN, "zh-Hant" },
         { "zh-TW", USCRIPT_TRADITIONAL_HAN, "zh-Hant" },
@@ skipping 26 matching lines @@
         }
 
         ASSERT_NE(nullptr, locale) << test.acceptLanguages;
         EXPECT_EQ(test.script, locale->scriptForHan()) << test.acceptLanguages;
         EXPECT_STRCASEEQ(test.locale, locale->localeForHanForSkFontMgr())
             << test.acceptLanguages;
     }
 }
 
 } // namespace blink