Replaced PassRefPtr copies with moves in Source/core.

third_party/WebKit/Source/core/layout/svg/LayoutSVGInlineText.cpp

 /*
  * Copyright (C) 2006 Oliver Hunt <ojh16@student.canterbury.ac.nz>
  * Copyright (C) 2006 Apple Computer Inc.
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2008 Rob Buis <buis@kde.org>
  * Copyright (C) Research In Motion Limited 2010. 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
@@ skipping 34 matching lines @@
 // this.
 static PassRefPtr<StringImpl> normalizeWhitespace(PassRefPtr<StringImpl> string)
 {
     RefPtr<StringImpl> newString = string->replace('\t', ' ');
     newString = newString->replace('\n', ' ');
     newString = newString->replace('\r', ' ');
     return newString.release();
 }
 
 LayoutSVGInlineText::LayoutSVGInlineText(Node* n, PassRefPtr<StringImpl> string)
-    : LayoutText(n, normalizeWhitespace(string))
+    : LayoutText(n, normalizeWhitespace(std::move(string)))
     , m_scalingFactor(1)
 {
 }
 
 void LayoutSVGInlineText::setTextInternal(PassRefPtr<StringImpl> text)
 {
-    LayoutText::setTextInternal(text);
+    LayoutText::setTextInternal(std::move(text));
     if (LayoutSVGText* textLayoutObject = LayoutSVGText::locateLayoutSVGTextAncestor(this))
         textLayoutObject->subtreeTextDidChange();
 }
 
 void LayoutSVGInlineText::styleDidChange(StyleDifference diff, const ComputedStyle* oldStyle)
 {
     LayoutText::styleDidChange(diff, oldStyle);
     updateScaledFont();
 
     bool newPreserves = style() ? style()->whiteSpace() == PRE : false;
@@ skipping 305 matching lines @@
 
 PassRefPtr<StringImpl> LayoutSVGInlineText::originalText() const
 {
     RefPtr<StringImpl> result = LayoutText::originalText();
     if (!result)
         return nullptr;
     return normalizeWhitespace(result);
 }
 
 } // namespace blink