Wrapped PassRefPtrs in move where passed to RefPtr constructor.

third_party/WebKit/Source/platform/fonts/FontCacheKey.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 39 matching lines @@
 
  public:
   FontCacheKey() : m_creationParams(), m_fontSize(0), m_options(0) {}
   FontCacheKey(FontFaceCreationParams creationParams,
                float fontSize,
                unsigned options,
                PassRefPtr<FontVariationSettings> variationSettings)
       : m_creationParams(creationParams),
         m_fontSize(fontSize * s_fontSizePrecisionMultiplier),
         m_options(options),
-        m_variationSettings(variationSettings) {}
+        m_variationSettings(std::move(variationSettings)) {}
 
   FontCacheKey(WTF::HashTableDeletedValueType)
       : m_fontSize(hashTableDeletedSize()) {}
 
   unsigned hash() const {
     unsigned hashCodes[4] = {
         m_creationParams.hash(), m_fontSize, m_options,
         m_variationSettings ? m_variationSettings->hash() : 0};
     return StringHasher::hashMemory<sizeof(hashCodes)>(hashCodes);
   }
@@ skipping 34 matching lines @@
   static const bool safeToCompareToEmptyOrDeleted = true;
 };
 
 struct FontCacheKeyTraits : WTF::SimpleClassHashTraits<FontCacheKey> {
   STATIC_ONLY(FontCacheKeyTraits);
 };
 
 }  // namespace blink
 
 #endif  // FontCacheKey_h