Switch GPU blur code over to using GrRecordingContext

This is split out of: https://skia-review.googlesource.com/c/skia/+/191287 (Move DrawingManager to RecordingContext)

Change-Id: I305249f1e63bd4720264b0531733a219c79fe10a
Reviewed-on: https://skia-review.googlesource.com/c/192686
Auto-Submit: Robert Phillips <robertphillips@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
diff --git a/src/gpu/GrBlurUtils.h b/src/gpu/GrBlurUtils.h
index 6db3cd2..bb7adbf 100644
--- a/src/gpu/GrBlurUtils.h
+++ b/src/gpu/GrBlurUtils.h
@@ -13,6 +13,7 @@
 class GrClip;
 class GrContext;
 class GrPaint;
+class GrRecordingContext;
 class GrRenderTarget;
 class GrRenderTargetContext;
 class GrShape;
@@ -43,7 +44,7 @@
      * Draw a shape handling the mask filter. The mask filter is not optional.
      * The GrPaint will be modified after return.
      */
-    void drawShapeWithMaskFilter(GrContext*,
+    void drawShapeWithMaskFilter(GrRecordingContext*,
                                  GrRenderTargetContext*,
                                  const GrClip&,
                                  const GrShape&,