Make skia::GetNativeDrawingContext Windows-only

skia/ext/platform_canvas.h

Index: skia/ext/platform_canvas.h
diff --git a/skia/ext/platform_canvas.h b/skia/ext/platform_canvas.h
index f877716b3106c707813aba1765b7b5b60094108c..1436ec1fef6a7cdd08ca3802b6f91e2a1d85805e 100644
--- a/skia/ext/platform_canvas.h
+++ b/skia/ext/platform_canvas.h
@@ -61,6 +61,10 @@ SK_API void DrawToNativeContext(SkCanvas* canvas,
                                 int x,
                                 int y,
                                 const RECT* src_rect);
+
+// Returns the NativeDrawingContext to use for native platform drawing calls.
+SK_API HDC GetNativeDrawingContext(SkCanvas* canvas);
+
 #elif defined(__linux__) || defined(__FreeBSD__) || defined(__OpenBSD__) || \
       defined(__sun) || defined(ANDROID) || defined(__APPLE__)
   // Construct a canvas from the given memory region. The memory is not cleared
@@ -121,9 +125,6 @@ SK_API SkBitmap ReadPixels(SkCanvas* canvas);
 // the pixmap to empty.
 SK_API bool GetWritablePixels(SkCanvas* canvas, SkPixmap* pixmap);
 
-// Returns the NativeDrawingContext to use for native platform drawing calls.
-SK_API NativeDrawingContext GetNativeDrawingContext(SkCanvas* canvas);
-
 // Following routines are used in print preview workflow to mark the
 // preview metafile.
 SK_API SkMetaData& GetMetaData(const SkCanvas& canvas);