SkPDF: remove all globally references SkPDFObjects

src/pdf/SkPDFCanon.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #ifndef SkPDFCanon_DEFINED
 #define SkPDFCanon_DEFINED
 
 #include "SkBitmap.h"
@@ skipping 66 matching lines @@
 
     SkPDFObject* findPDFBitmap(const SkImage* image) const;
     void addPDFBitmap(uint32_t imageUniqueID, SkPDFObject*);
     const SkImage* bitmapToImage(const SkBitmap&);
 
     SkTHashMap<uint32_t, bool> fCanEmbedTypeface;
 
     SkPixelSerializer* getPixelSerializer() const { return fPixelSerializer.get(); }
     void setPixelSerializer(SkPixelSerializer* ps)  { fPixelSerializer.reset(ps); }
 
+    sk_sp<SkPDFStream> makeInvertFunction();
+    sk_sp<SkPDFDict> makeNoSmaskGraphicState();
+    sk_sp<SkPDFArray> makeRangeObject();
+
 private:
     struct FontRec {
         SkPDFFont* fFont;
         uint32_t fFontID;
         uint16_t fGlyphID;
     };
     SkTDArray<FontRec> fFontRecords;
 
     SkTDArray<SkPDFFunctionShader*> fFunctionShaderRecords;
 
@@ skipping 15 matching lines @@
                 return w.fPtr->hash();
             }
         };
     };
     SkTHashSet<WrapGS, WrapGS::Hash> fGraphicStateRecords;
 
     SkTHashMap<SkBitmapKey, const SkImage*> fBitmapToImageMap;
     SkTHashMap<uint32_t /*ImageUniqueID*/, SkPDFObject*> fPDFBitmapMap;
 
     sk_sp<SkPixelSerializer> fPixelSerializer;
+    sk_sp<SkPDFStream> fInvertFunction;
+    sk_sp<SkPDFDict> fNoSmaskGraphicState;
+    sk_sp<SkPDFArray> fRangeObject;
 };
 #endif  // SkPDFCanon_DEFINED