Fix the PictureRecord step of BenchPictures.

Review URL: https://codereview.appspot.com/6820100

git-svn-id: http://skia.googlecode.com/svn/trunk@6311 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tools/PictureRenderer.h b/tools/PictureRenderer.h
index a3c879a..3858f81 100644
--- a/tools/PictureRenderer.h
+++ b/tools/PictureRenderer.h
@@ -169,6 +169,9 @@
 
     virtual SkString getNormalTimeFormat() SK_OVERRIDE { return SkString("%6.4f"); }
 
+protected:
+    virtual SkCanvas* setupCanvas(int width, int height) SK_OVERRIDE;
+
 private:
     virtual SkString getConfigNameInternal() SK_OVERRIDE;
 };