Remove GrLayerHoister

src/gpu/SkGpuDevice.h

Index: src/gpu/SkGpuDevice.h
diff --git a/src/gpu/SkGpuDevice.h b/src/gpu/SkGpuDevice.h
index 4c6a0f37abb5ad5df786cfbc1b436f93661293ef..6c0288d4aec37c23148011dd0b5d39bb31e1bafc 100644
--- a/src/gpu/SkGpuDevice.h
+++ b/src/gpu/SkGpuDevice.h
@@ -145,10 +145,6 @@ protected:
     bool onWritePixels(const SkImageInfo&, const void*, size_t, int, int) override;
     bool onShouldDisableLCD(const SkPaint&) const final;
 
-    /**  PRIVATE / EXPERIMENTAL -- do not call */
-    virtual bool EXPERIMENTAL_drawPicture(SkCanvas* canvas, const SkPicture* picture,
-                                          const SkMatrix*, const SkPaint*) override;
-
 private:
     // We want these unreffed in DrawContext, RenderTarget, GrContext order.
     SkAutoTUnref<GrContext>         fContext;