WIP RasterCanvasLayerAllocator

src/gpu/SkGpuDevice.h

Index: src/gpu/SkGpuDevice.h
diff --git a/src/gpu/SkGpuDevice.h b/src/gpu/SkGpuDevice.h
index 474a030ef5bd787ab8152f0011bef8fffc7388cc..6689e491e2b81631fb0ff6132c1534eaf2031087 100644
--- a/src/gpu/SkGpuDevice.h
+++ b/src/gpu/SkGpuDevice.h
@@ -22,6 +22,7 @@
 class GrAccelData;
 class GrTextureProducer;
 struct GrCachedLayer;
+class SkRasterCanvasLayerAllocator;
 
 /**
  *  Subclass of SkBaseDevice, which directs all drawing to the GrGpu owned by the
@@ -65,7 +66,7 @@ public:
     SkGpuDevice* cloneDevice(const SkSurfaceProps& props) {
         SkBaseDevice* dev = this->onCreateDevice(CreateInfo(this->imageInfo(), kPossible_TileUsage,
                                                             props.pixelGeometry()),
-                                                 nullptr);
+                                                 nullptr, nullptr);
         return static_cast<SkGpuDevice*>(dev);
     }
 
@@ -172,7 +173,8 @@ private:
 
     SkGpuDevice(sk_sp<GrDrawContext>, int width, int height, unsigned flags);
 
-    SkBaseDevice* onCreateDevice(const CreateInfo&, const SkPaint*) override;
+    SkBaseDevice* onCreateDevice(const CreateInfo&, const SkPaint*,
+                                 SkRasterCanvasLayerAllocator*) override;
 
     sk_sp<SkSurface> makeSurface(const SkImageInfo&, const SkSurfaceProps&) override;