Replaced PassRefPtr copies with moves in Source/core.

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

Index: third_party/WebKit/Source/core/fileapi/File.h
diff --git a/third_party/WebKit/Source/core/fileapi/File.h b/third_party/WebKit/Source/core/fileapi/File.h
index f9da21d5bf127f7a462eae1e7260737cd9e182b6..7589b583411ad54c712fd48a554fb6e52e47b724 100644
--- a/third_party/WebKit/Source/core/fileapi/File.h
+++ b/third_party/WebKit/Source/core/fileapi/File.h
@@ -65,17 +65,17 @@ public:
 
     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);