Update the SkDocument interface to allow for 1) abort won't emit pdf, 2) close can report success/f…

tools/PdfRenderer.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef PdfRenderer_DEFINED
 #define PdfRenderer_DEFINED
 
 //
 // PdfRender takes a SkPicture and writes it to a PDF file.
 // An SkPicture can be built manually, or read from an SKP file.
 //
 
+#include "SkDocument.h"
 #include "SkMath.h"
-#include "SkPDFDevice.h"
 #include "SkPicture.h"
 #include "SkTypes.h"
 #include "SkTDArray.h"
 #include "SkRefCnt.h"
 #include "SkString.h"
 
 class SkBitmap;
 class SkCanvas;
+class SkWStream;
 
 namespace sk_tools {
 
 class PdfRenderer : public SkRefCnt {
 public:
-    virtual void init(SkPicture* pict);
+    virtual void init(SkPicture* pict, SkWStream* stream);
     virtual void setup() {}
-    virtual void render() = 0;
+    virtual bool render() = 0;
     virtual void end();
 
     PdfRenderer(SkPicture::EncodeBitmap encoder)
         : fPicture(NULL)
-        , fPDFDevice(NULL)
         , fEncoder(encoder)
+        , fPdfDoc(NULL)
         {}
 
-    void write(SkWStream* stream) const;
-
 protected:
-    SkCanvas* setupCanvas();
-    SkCanvas* setupCanvas(int width, int height);
+    SkCanvas* setupCanvas(SkWStream* stream, int width, int height);
 
     SkAutoTUnref<SkCanvas> fCanvas;
     SkPicture* fPicture;
-    SkPDFDevice* fPDFDevice;
     SkPicture::EncodeBitmap fEncoder;
+    SkAutoTUnref<SkDocument> fPdfDoc;
 
 private:
     typedef SkRefCnt INHERITED;
 };
 
 class SimplePdfRenderer : public PdfRenderer {
 public:
     SimplePdfRenderer(SkPicture::EncodeBitmap encoder)
         : PdfRenderer(encoder) {}
-    virtual void render() SK_OVERRIDE;
+    virtual bool render() SK_OVERRIDE;
 
 private:
     typedef PdfRenderer INHERITED;
 };
 
 }
 
 #endif  // PdfRenderer_DEFINED