WIP RasterCanvasLayerAllocator

src/gpu/SkGpuDevice.h

Index: src/gpu/SkGpuDevice.h
diff --git a/src/gpu/SkGpuDevice.h b/src/gpu/SkGpuDevice.h
index e57da44c692755365322490cd3786d91faa35e84..a8e4cdc1e48be1c920e92bdc4f2d3f94fe677562 100644
--- a/src/gpu/SkGpuDevice.h
+++ b/src/gpu/SkGpuDevice.h
@@ -23,6 +23,7 @@
 class GrAccelData;
 class GrTextureProducer;
 struct GrCachedLayer;
+class SkRasterCanvasLayerAllocator;
 
 /**
  *  Subclass of SkBaseDevice, which directs all drawing to the GrGpu owned by the
@@ -61,7 +62,7 @@ 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);
     }
 
@@ -178,7 +179,8 @@ private:
 
     SkGpuDevice(GrRenderTarget*, int width, int height, const SkSurfaceProps*, unsigned flags);
 
-    SkBaseDevice* onCreateDevice(const CreateInfo&, const SkPaint*) override;
+    SkBaseDevice* onCreateDevice(const CreateInfo&, const SkPaint*,
+                                 SkRasterCanvasLayerAllocator*) override;
 
     SkSurface* newSurface(const SkImageInfo&, const SkSurfaceProps&) override;