SkPDF: Implement drawImage*() properly

src/pdf/SkPDFTypes.h

 /*
  * Copyright 2010 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkPDFTypes_DEFINED
 #define SkPDFTypes_DEFINED
 
 #include "SkRefCnt.h"
 #include "SkScalar.h"
 #include "SkStream.h"
 #include "SkString.h"
 #include "SkTDArray.h"
 #include "SkTHash.h"
 #include "SkTypes.h"
 
 class SkPDFObjNumMap;
 class SkPDFObject;
 class SkPDFSubstituteMap;
 
+#ifdef SK_PDF_IMAGE_STATS
+#include "SkAtomics.h"
+#endif
+
 /** \class SkPDFObject
 
     A PDF Object is the base class for primitive elements in a PDF file.  A
     common subtype is used to ease the use of indirect object references,
     which are common in the PDF format.
 
 */
 class SkPDFObject : public SkRefCnt {
 public:
     /** Subclasses must implement this method to print the object to the
@@ skipping 341 matching lines @@
     SkPDFObject* getSubstitute(SkPDFObject* object) const;
 
     SkPDFObject* operator()(SkPDFObject* o) const {
         return this->getSubstitute(o);
     }
 
 private:
     SkTHashMap<SkPDFObject*, SkPDFObject*> fSubstituteMap;
 };
 
+#ifdef SK_PDF_IMAGE_STATS
+extern SkAtomic<int> gDrawImageCalls;
+extern SkAtomic<int> gJpegImageObjects;
+extern SkAtomic<int> gRegularImageObjects;
+extern void SkPDFImageDumpStats();
+#endif // SK_PDF_IMAGE_STATS
+
 #endif