Implement 'normal', 'strict', and 'loose' of the 'line-break' property

third_party/WebKit/Source/platform/LayoutLocale.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 LayoutLocale_h
 #define LayoutLocale_h
 
 #include "platform/PlatformExport.h"
 #include "platform/text/Hyphenation.h"
 #include "wtf/Forward.h"
 #include "wtf/RefCounted.h"
 #include "wtf/text/AtomicString.h"
 
 #include <unicode/uscript.h>
 
 struct hb_language_impl_t;
 
 namespace blink {
 
 class Hyphenation;
 
+enum class LineBreakIteratorMode { Default, Normal, Strict, Loose };
+
 class PLATFORM_EXPORT LayoutLocale : public RefCounted<LayoutLocale> {
  public:
   static const LayoutLocale* get(const AtomicString& locale);
   static const LayoutLocale& getDefault();
   static const LayoutLocale& getSystem();
   static const LayoutLocale& valueOrDefault(const LayoutLocale* locale) {
     return locale ? *locale : getDefault();
   }
 
   bool operator==(const LayoutLocale& other) const {
@@ skipping 18 matching lines @@
 
   // Disambiguation of the Unified Han Ideographs.
   UScriptCode scriptForHan() const;
   bool hasScriptForHan() const;
   static const LayoutLocale* localeForHan(const LayoutLocale*);
   static void invalidateLocaleForHan() { s_defaultForHanComputed = false; }
   const char* localeForHanForSkFontMgr() const;
 
   Hyphenation* getHyphenation() const;
 
+  AtomicString localeWithBreakKeyword(LineBreakIteratorMode) const;
+
   static PassRefPtr<LayoutLocale> createForTesting(const AtomicString&);
   static void clearForTesting();
   static void setHyphenationForTesting(const AtomicString&,
                                        PassRefPtr<Hyphenation>);
 
  private:
   explicit LayoutLocale(const AtomicString&);
 
   void computeScriptForHan() const;
   static void computeLocaleForHan();
@@ skipping 13 matching lines @@
 
   static const LayoutLocale* s_default;
   static const LayoutLocale* s_system;
   static const LayoutLocale* s_defaultForHan;
   static bool s_defaultForHanComputed;
 };
 
 }  // namespace blink
 
 #endif  // LayoutLocale_h