Enable hyphens: auto and none in BreakingContext

third_party/WebKit/Source/core/testing/MockHyphenation.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 MockHyphenation_h
+#define MockHyphenation_h
+
 #include "platform/text/Hyphenation.h"
 
 namespace blink {
 
-PassRefPtr<Hyphenation> Hyphenation::platformGetHyphenation(const AtomicString&)
-{
-    return nullptr;
-}
+class MockHyphenation : public Hyphenation {
+public:
+    size_t lastHyphenLocation(const StringView&, size_t beforeIndex) const override;
+};
 
 } // namespace blink
+
+#endif // MockHyphenation_h