Get rid of unused skia::IsDraftMode()

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 f3b2fe34e27ba3bcced0545e3a080d43f614b946..fa60afb75b9d6abd3c41b3d03ead72573b94d24a 100644
--- a/skia/ext/platform_device.h
+++ b/skia/ext/platform_device.h
@@ -71,13 +71,11 @@ SK_API void InitializeDC(HDC context);
 SK_API CGContextRef GetBitmapContext(SkBaseDevice* device);
 #endif
 
-// Following routines are used in print preview workflow to mark the draft mode
-// metafile and preview metafile.
+// Following routines are used in print preview workflow to mark the
+// preview metafile.
 SK_API SkMetaData& getMetaData(const SkCanvas& canvas);
-SK_API void SetIsDraftMode(const SkCanvas& canvas, bool draft_mode);
-SK_API bool IsDraftMode(const SkCanvas& canvas);
 
-#if defined(OS_MACOSX) || defined(OS_WIN)
+#if defined(OS_MACOSX)
 SK_API void SetIsPreviewMetafile(const SkCanvas& canvas, bool is_preview);
 SK_API bool IsPreviewMetafile(const SkCanvas& canvas);
 #endif