Take Accept-Language into account in CJK font fallback for Android/Win

third_party/WebKit/Source/platform/fonts/AcceptLanguagesResolver.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 AcceptLanguagesResolver_h
+#define AcceptLanguagesResolver_h
+
+#include "platform/PlatformExport.h"
+#include "wtf/text/WTFString.h"
+
+#include <unicode/uscript.h>
+
+namespace blink {
+
+class PLATFORM_EXPORT AcceptLanguagesResolver {
+public:
+    static UScriptCode preferredHanScript() { return m_preferredHanScript; }
+    static const char* preferredHanSkFontMgrLocale()
+    {
+        return m_preferredHanSkFontMgrLocale;
+    }
+
+    static void acceptLanguagesChanged(const String&);
+
+    static void updateFromAcceptLanguages(const String&);
+
+private:
+    static UScriptCode m_preferredHanScript;
+    static const char* m_preferredHanSkFontMgrLocale;
+};
+
+} // namespace blink
+
+#endif // AcceptLanguagesResolver_h