PrintPreview: Printing preview of a PDF on Mac with Skia only previews the last page of the PDF

skia/ext/platform_device.h

Index: skia/ext/platform_device.h
diff --git a/skia/ext/platform_device.h b/skia/ext/platform_device.h
index 179a8e8bfa33facd13baaf209cb414d207359fc3..636793448e07dd1592afd94c8f2fcd9d16538ebc 100644
--- a/skia/ext/platform_device.h
+++ b/skia/ext/platform_device.h
@@ -18,6 +18,7 @@
 #include "third_party/skia/include/core/SkColor.h"
 
 class SkMatrix;
+class SkMetaData;
 class SkPath;
 class SkRegion;
 
@@ -78,6 +79,17 @@ SK_API void InitializeDC(HDC context);
 SK_API CGContextRef GetBitmapContext(SkDevice* device);
 #endif
 
+// Following routines are used in print preview workflow to mark the draft mode
+// metafile and preview metafile.
+SkMetaData& getMetaData(const SkCanvas* canvas);
+void SetIsDraftMode(const SkCanvas* canvas, bool draft_mode);
+bool IsDraftMode(const SkCanvas* canvas);
+
+#if defined(OS_MACOSX) || defined(OS_WIN)
+void SetIsPreviewMetafile(const SkCanvas* canvas, bool is_preview);
+bool IsPreviewMetafile(const SkCanvas* canvas);
+#endif
+
 // A SkDevice is basically a wrapper around SkBitmap that provides a surface for
 // SkCanvas to draw into. PlatformDevice provides a surface Windows can also
 // write to. It also provides functionality to play well with GDI drawing