Increase the amount of debug information printed out by batches

Untangling MDB bugs requires more information. In particular the render targets.

BUG=skia:4094
TBR=bsalomon@google.com

Review URL: https://codereview.chromium.org/1443763002
diff --git a/src/effects/SkLightingImageFilter.cpp b/src/effects/SkLightingImageFilter.cpp
index 411d73b..9fda787 100644
--- a/src/effects/SkLightingImageFilter.cpp
+++ b/src/effects/SkLightingImageFilter.cpp
@@ -491,7 +491,7 @@
 public:
     GrLightingEffect(GrTexture* texture, const SkImageFilterLight* light, SkScalar surfaceScale,
                      const SkMatrix& matrix, BoundaryMode boundaryMode);
-    virtual ~GrLightingEffect();
+    ~GrLightingEffect() override;
 
     const SkImageFilterLight* light() const { return fLight; }
     SkScalar surfaceScale() const { return fSurfaceScale; }