Use pdf compositor service for printing when OOPIF is enabled

printing/common/pdf_metafile_utils.h

 // Copyright 2017 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.
 
 #ifndef PRINTING_COMMON_PDF_METAFILE_UTILS_H_
 #define PRINTING_COMMON_PDF_METAFILE_UTILS_H_
 
 #include <string>
 
 #include "skia/ext/platform_canvas.h"
 #include "third_party/skia/include/core/SkDocument.h"
 #include "third_party/skia/include/core/SkRefCnt.h"
 #include "third_party/skia/include/core/SkStream.h"
 
 namespace printing {
 
-enum SkiaDocumentType {
-  PDF_SKIA_DOCUMENT_TYPE,
+enum class SkiaDocumentType {

[Lei Zhang, 2017/08/16 21:17:01]

Can we split this into a separate CL?

[Wei Li, 2017/08/25 23:39:37]

Done.

+  PDF,
   // MSKP is an experimental, fragile, and diagnostic-only document type.
-  MSKP_SKIA_DOCUMENT_TYPE,
+  MSKP,
+  MAX = MSKP
 };
 
 sk_sp<SkDocument> MakePdfDocument(const std::string& creator,
                                   SkWStream* stream);
 
 }  // namespace printing
 
 #endif  // PRINTING_COMMON_PDF_METAFILE_UTILS_H_