Replaced PassRefPtr copies with moves in Source/platform.

third_party/WebKit/Source/platform/network/EncodedFormData.cpp

 /*
  * Copyright (C) 2004, 2006, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies)
  *
  * 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 118 matching lines @@
     m_elements.append(FormDataElement(filename, 0, BlobDataItem::toEndOfFile, invalidFileTime()));
 }
 
 void EncodedFormData::appendFileRange(const String& filename, long long start, long long length, double expectedModificationTime)
 {
     m_elements.append(FormDataElement(filename, start, length, expectedModificationTime));
 }
 
 void EncodedFormData::appendBlob(const String& uuid, PassRefPtr<BlobDataHandle> optionalHandle)
 {
-    m_elements.append(FormDataElement(uuid, optionalHandle));
+    m_elements.append(FormDataElement(uuid, std::move(optionalHandle)));
 }
 
 void EncodedFormData::appendFileSystemURL(const KURL& url)
 {
     m_elements.append(FormDataElement(url, 0, BlobDataItem::toEndOfFile, invalidFileTime()));
 }
 
 void EncodedFormData::appendFileSystemURLRange(const KURL& url, long long start, long long length, double expectedModificationTime)
 {
     m_elements.append(FormDataElement(url, start, length, expectedModificationTime));
@@ skipping 48 matching lines @@
     if (!hasOneRef())
         return false;
     for (auto& element : m_elements) {
         if (!element.isSafeToSendToAnotherThread())
             return false;
     }
     return true;
 }
 
 } // namespace blink