Replaced PassRefPtr copies with moves in Source/core.

third_party/WebKit/Source/core/fileapi/File.h

 /*
  * Copyright (C) 2008 Apple 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 47 matching lines @@
     // Constructor in File.idl
     static File* create(ExecutionContext*, const HeapVector<ArrayBufferOrArrayBufferViewOrBlobOrUSVString>&, const String& fileName, const FilePropertyBag&, ExceptionState&);
 
     static File* create(const String& path, ContentTypeLookupPolicy policy = WellKnownContentTypes)
     {
         return new File(path, policy, File::IsUserVisible);
     }
 
     static File* create(const String& name, double modificationTime, PassRefPtr<BlobDataHandle> blobDataHandle)
     {
-        return new File(name, modificationTime, blobDataHandle);
+        return new File(name, modificationTime, std::move(blobDataHandle));
     }
 
     // For deserialization.
     static File* createFromSerialization(const String& path, const String& name, const String& relativePath, UserVisibility userVisibility, bool hasSnapshotData, uint64_t size, double lastModified, PassRefPtr<BlobDataHandle> blobDataHandle)
     {
-        return new File(path, name, relativePath, userVisibility, hasSnapshotData, size, lastModified, blobDataHandle);
+        return new File(path, name, relativePath, userVisibility, hasSnapshotData, size, lastModified, std::move(blobDataHandle));
     }
     static File* createFromIndexedSerialization(const String& path, const String& name, uint64_t size, double lastModified, PassRefPtr<BlobDataHandle> blobDataHandle)
     {
-        return new File(path, name, String(), IsNotUserVisible, true, size, lastModified, blobDataHandle);
+        return new File(path, name, String(), IsNotUserVisible, true, size, lastModified, std::move(blobDataHandle));
     }
 
     static File* createWithRelativePath(const String& path, const String& relativePath);
 
     // If filesystem files live in the remote filesystem, the port might pass the valid metadata (whose length field is non-negative) and cache in the File object.
     //
     // Otherwise calling size(), lastModifiedTime() and slice() will synchronously query the file metadata.
     static File* createForFileSystemFile(const String& name, const FileMetadata& metadata, UserVisibility userVisibility)
     {
         return new File(name, metadata, userVisibility);
@@ skipping 92 matching lines @@
     const double m_snapshotModificationTimeMS;
 
     String m_relativePath;
 };
 
 DEFINE_TYPE_CASTS(File, Blob, blob, blob->isFile(), blob.isFile());
 
 } // namespace blink
 
 #endif // File_h