SkPDF: Implement drawImage*() properly

src/pdf/SkPDFTypes.h

Index: src/pdf/SkPDFTypes.h
diff --git a/src/pdf/SkPDFTypes.h b/src/pdf/SkPDFTypes.h
index 60d511409ffe719d2db344d157268553d6553428..ec527fc932cfd33737942f50b479ba15085ce4da 100644
--- a/src/pdf/SkPDFTypes.h
+++ b/src/pdf/SkPDFTypes.h
@@ -21,6 +21,10 @@ 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
@@ -382,4 +386,11 @@ 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