remove fClipStack and attach/deattach-from-canvas

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 101 matching lines @@
                      const SkScalar pos[], int scalarsPerPos,
                      const SkPoint& offset, const SkPaint&) override;
     void drawVertices(const SkDraw&, SkCanvas::VertexMode,
                       int vertexCount, const SkPoint verts[],
                       const SkPoint texs[], const SkColor colors[],
                       SkXfermode* xmode, const uint16_t indices[],
                       int indexCount, const SkPaint& paint) override;
     void drawDevice(const SkDraw&, SkBaseDevice*, int x, int y,
                     const SkPaint&) override;
 
-    void onAttachToCanvas(SkCanvas* canvas) override;
-    void onDetachFromCanvas() override;
     SkImageInfo imageInfo() const override;
 
     // PDF specific methods.
 
     /** Create the resource dictionary for this device. */
     sk_sp<SkPDFDict> makeResourceDict() const;
 
     /** Get the fonts used on this device.
      */
     const SkTDArray<SkPDFFont*>& getFontResources() const;
@@ skipping 115 matching lines @@
     SkTDArray<SkPDFObject*> fXObjectResources;
     SkTDArray<SkPDFFont*> fFontResources;
     SkTDArray<SkPDFObject*> fShaderResources;
 
     struct ContentEntry {
         GraphicStateEntry fState;
         SkDynamicMemoryWStream fContent;
     };
     SkSinglyLinkedList<ContentEntry> fContentEntries;
 
-    const SkClipStack* fClipStack;
-
     SkScalar fRasterDpi;
 
     SkPDFDocument* fDocument;
     ////////////////////////////////////////////////////////////////////////////
 
     SkPDFDevice(SkISize pageSize,
                 SkScalar rasterDpi,
                 SkPDFDocument* doc,
                 bool flip);
 
@@ skipping 53 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