add SkCanvas::drawAtlas

BUG=skia:

Review URL: https://codereview.chromium.org/1181913003
diff --git a/src/core/SkPictureRecord.h b/src/core/SkPictureRecord.h
index 0b6ef8b..cee5ea3 100644
--- a/src/core/SkPictureRecord.h
+++ b/src/core/SkPictureRecord.h
@@ -173,6 +173,8 @@
     virtual void onDrawPatch(const SkPoint cubics[12], const SkColor colors[4],
                              const SkPoint texCoords[4], SkXfermode* xmode,
                              const SkPaint& paint) override;
+    void onDrawAtlas(const SkImage*, const SkRSXform[], const SkRect[], const SkColor[], int,
+                     SkXfermode::Mode, const SkRect*, const SkPaint*) override;
 
     void onDrawPaint(const SkPaint&) override;
     void onDrawPoints(PointMode, size_t count, const SkPoint pts[], const SkPaint&) override;