keep only one typedef for the native drawing context

skia/ext/bitmap_platform_device_win.cc

Index: skia/ext/bitmap_platform_device_win.cc
diff --git a/skia/ext/bitmap_platform_device_win.cc b/skia/ext/bitmap_platform_device_win.cc
index 735a0d8479b09ae5924d9b2adbd5978efc9b90e5..4687c920b32c060f6e0224a64e0ee4bc502b9cea 100644
--- a/skia/ext/bitmap_platform_device_win.cc
+++ b/skia/ext/bitmap_platform_device_win.cc
@@ -44,7 +44,7 @@ void DrawToNativeContext(SkCanvas* canvas, HDC destination_hdc, int x, int y,
     temp_rect.bottom = canvas->imageInfo().height();
     src_rect = &temp_rect;
   }
-  skia::CopyHDC(p.GetPlatformSurface(), destination_hdc, x, y,
+  skia::CopyHDC(p.GetNativeDrawingContext(), destination_hdc, x, y,
                 canvas->imageInfo().isOpaque(), *src_rect,
                 canvas->getTotalMatrix());
 }