Revert[8] "replace SkXfermode obj with SkBlendMode enum in paints"

src/pdf/SkPDFDevice.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkPDFDevice_DEFINED
 #define SkPDFDevice_DEFINED
 
@@ skipping 228 matching lines @@
     SkBaseDevice* onCreateDevice(const CreateInfo&, const SkPaint*) override;
 
     void init();
     void cleanUp();
     sk_sp<SkPDFObject> makeFormXObjectFromDevice();
 
     void drawFormXObjectWithMask(int xObjectIndex,
                                  sk_sp<SkPDFObject> mask,
                                  const SkClipStack* clipStack,
                                  const SkRegion& clipRegion,
-                                 SkXfermode::Mode mode,
+                                 SkBlendMode,
                                  bool invertClip);
 
     // If the paint or clip is such that we shouldn't draw anything, this
     // returns nullptr and does not create a content entry.
     // setUpContentEntry and finishContentEntry can be used directly, but
     // the preferred method is to use the ScopedContentEntry helper class.
     ContentEntry* setUpContentEntry(const SkClipStack* clipStack,
                                     const SkRegion& clipRegion,
                                     const SkMatrix& matrix,
                                     const SkPaint& paint,
                                     bool hasText,
                                     sk_sp<SkPDFObject>* dst);
-    void finishContentEntry(SkXfermode::Mode xfermode,
-                            sk_sp<SkPDFObject> dst,
-                            SkPath* shape);
+    void finishContentEntry(SkBlendMode, sk_sp<SkPDFObject> dst, SkPath* shape);
     bool isContentEmpty();
 
     void populateGraphicStateEntryFromPaint(const SkMatrix& matrix,
                                             const SkClipStack& clipStack,
                                             const SkRegion& clipRegion,
                                             const SkPaint& paint,
                                             bool hasText,
                                             GraphicStateEntry* entry);
     int addGraphicStateResource(SkPDFObject* gs);
     int addXObjectResource(SkPDFObject* xObject);
@@ skipping 21 matching lines @@
 
     typedef SkBaseDevice INHERITED;
 
     // TODO(edisonn): Only SkDocument_PDF and SkPDFImageShader should be able to create
     // an SkPDFDevice
     //friend class SkDocument_PDF;
     //friend class SkPDFImageShader;
 };
 
 #endif