Replaced PassRefPtr copies with moves in Source/platform.

third_party/WebKit/Source/platform/fonts/FontFallbackIterator.cpp

 // Copyright 2015 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.
 
 #include "platform/fonts/FontFallbackIterator.h"
 
 #include "platform/fonts/FontCache.h"
 #include "platform/fonts/FontDescription.h"
 #include "platform/fonts/FontFallbackList.h"
 #include "platform/fonts/SegmentedFontData.h"
 #include "platform/fonts/SimpleFontData.h"
 
 namespace blink {
 
 PassRefPtr<FontFallbackIterator> FontFallbackIterator::create(
     const FontDescription& description,
     PassRefPtr<FontFallbackList> fallbackList,
     FontFallbackPriority fontFallbackPriority)
 {
     return adoptRef(new FontFallbackIterator(
-        description, fallbackList, fontFallbackPriority));
+        description, std::move(fallbackList), fontFallbackPriority));
 }
 
 FontFallbackIterator::FontFallbackIterator(const FontDescription& description,
     PassRefPtr<FontFallbackList> fallbackList,
     FontFallbackPriority fontFallbackPriority)
     : m_fontDescription(description)
     , m_fontFallbackList(fallbackList)
     , m_currentFontDataIndex(0)
     , m_segmentedFaceIndex(0)
     , m_fallbackStage(FontGroupFonts)
@@ skipping 166 matching lines @@
     // already.
     if (!hint || m_previouslyAskedForHint.contains(hint))
         return nullptr;
 
     FontCache* fontCache = FontCache::fontCache();
     m_previouslyAskedForHint.add(hint);
     return fontCache->fallbackFontForCharacter(m_fontDescription, hint, m_fontFallbackList->primarySimpleFontData(m_fontDescription));
 }
 
 } // namespace blink