Add LayoutLocale class

third_party/WebKit/Source/platform/text/Hyphenation.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 Hyphenation_h
 #define Hyphenation_h
 
 #include "platform/PlatformExport.h"
-#include "platform/fonts/Font.h"
 #include "wtf/Forward.h"
 #include "wtf/HashMap.h"
 #include "wtf/RefCounted.h"
 #include "wtf/text/AtomicStringHash.h"
 #include "wtf/text/StringHash.h"
 
 namespace blink {
 
+class Font;
+
 class PLATFORM_EXPORT Hyphenation : public RefCounted<Hyphenation> {
 public:
     virtual ~Hyphenation() {}
 
-    static Hyphenation* get(const AtomicString& locale);
-
     virtual size_t lastHyphenLocation(const StringView&, size_t beforeIndex) const = 0;
     virtual Vector<size_t, 8> hyphenLocations(const StringView&) const;
 
     static const unsigned minimumPrefixLength = 2;
     static const unsigned minimumSuffixLength = 2;
     static int minimumPrefixWidth(const Font&);
 
-    static void setForTesting(const AtomicString& locale, PassRefPtr<Hyphenation>);
-    static void clearForTesting();
-
 private:
-    using HyphenationMap = HashMap<AtomicString, RefPtr<Hyphenation>, CaseFoldingHash>;
-
-    static HyphenationMap& getHyphenationMap();
+    friend class LayoutLocale;
     static PassRefPtr<Hyphenation> platformGetHyphenation(const AtomicString& locale);
 };
 
-inline int Hyphenation::minimumPrefixWidth(const Font& font)
-{
-    // If the maximum width available for the prefix before the hyphen is small, then it is very unlikely
-    // that an hyphenation opportunity exists, so do not bother to look for it.
-    // These are heuristic numbers for performance added in http://wkb.ug/45606
-    const int minimumPrefixWidthNumerator = 5;
-    const int minimumPrefixWidthDenominator = 4;
-    return font.getFontDescription().computedPixelSize()
-        * minimumPrefixWidthNumerator / minimumPrefixWidthDenominator;
-}
-
 } // namespace blink
 
 #endif // Hyphenation_h