Replaced PassRefPtr copies with moves in Source/core.

third_party/WebKit/Source/core/css/resolver/FontBuilder.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Google Inc. All rights reserved.
  * Copyright (C) 2015 Collabora Ltd. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 127 matching lines @@
 {
     set(PropertySetFlag::Stretch);
 
     m_fontDescription.setStretch(fontStretch);
 }
 
 void FontBuilder::setLocale(PassRefPtr<const LayoutLocale> locale)
 {
     set(PropertySetFlag::Locale);
 
-    m_fontDescription.setLocale(locale);
+    m_fontDescription.setLocale(std::move(locale));
 }
 
 void FontBuilder::setStyle(FontStyle italic)
 {
     set(PropertySetFlag::Style);
 
     m_fontDescription.setStyle(italic);
 }
 
 void FontBuilder::setVariantCaps(FontDescription::FontVariantCaps caps)
@@ skipping 35 matching lines @@
 {
     set(PropertySetFlag::FontSmoothing);
 
     m_fontDescription.setFontSmoothing(foontSmoothingMode);
 }
 
 void FontBuilder::setFeatureSettings(PassRefPtr<FontFeatureSettings> settings)
 {
     set(PropertySetFlag::FeatureSettings);
 
-    m_fontDescription.setFeatureSettings(settings);
+    m_fontDescription.setFeatureSettings(std::move(settings));
 }
 
 void FontBuilder::setFamilyDescription(FontDescription& fontDescription, const FontDescription::FamilyDescription& familyDescription)
 {
     set(PropertySetFlag::Family);
 
     bool isInitial = familyDescription.genericFamily == FontDescription::StandardFamily && familyDescription.family.familyIsEmpty();
 
     fontDescription.setGenericFamily(familyDescription.genericFamily);
     fontDescription.setFamily(isInitial ? standardFontFamily() : familyDescription.family);
@@ skipping 190 matching lines @@
     setSize(fontDescription, FontDescription::Size(FontSize::initialKeywordSize(), 0.0f, false));
     updateSpecifiedSize(fontDescription, documentStyle);
     updateComputedSize(fontDescription, documentStyle);
 
     updateOrientation(fontDescription, documentStyle);
     documentStyle.setFontDescription(fontDescription);
     documentStyle.font().update(fontSelector);
 }
 
 } // namespace blink