pdfviewer: some code cleanup in renderer

experimental/PdfViewer/SkPdfRenderer.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkCanvas.h"
 #include "SkDevice.h"
 #include "SkForceLinking.h"
 #include "SkGraphics.h"
 #include "SkImageDecoder.h"
 #include "SkImageEncoder.h"
 #include "SkOSFile.h"
 #include "SkPicture.h"
 #include "SkStream.h"
 #include "SkTypeface.h"
 #include "SkTArray.h"
 
+#include "SkPdfBasics.h"
+#include "SkPdfNativeTokenizer.h"
+
 #include <iostream>
 #include <cstdio>
 #include <stack>
 #include <set>
 
+extern "C" PdfContext* gPdfContext;
+extern "C" SkBitmap* gDumpBitmap;
+extern "C" SkCanvas* gDumpCanvas;
+
 __SK_FORCE_IMAGE_DECODER_LINKING;
 
 // TODO(edisonn): tool, show what objects were read at least, show the ones not even read
 // keep for each object pos in file
 // plug in for VS? syntax coloring, show selected object ... from the text, or from rendered x,y
 
 // TODO(edisonn): security - validate all the user input, all pdf!
 
 // TODO(edisonn): put drawtext in #ifdefs, so comparations will ignore minor changes in text positioning and font
 // this way, we look more at other features and layout in diffs
@@ skipping 1975 matching lines @@
 
 SkRect SkPdfRenderer::MediaBox(int page) const {
     SkASSERT(fPdfDoc);
     return fPdfDoc->MediaBox(page);
 }
 
 size_t SkPdfRenderer::bytesUsed() const {
     return fPdfDoc ? fPdfDoc->bytesUsed() : 0;
 }