api helpers inspired by blink use-cases

include/core/SkCanvas.h

Index: include/core/SkCanvas.h
diff --git a/include/core/SkCanvas.h b/include/core/SkCanvas.h
index 1d5baeee5687674c157f93df3727cc5783fc907a..6a88d6832277dcbe57c1951224a28640a49b0145 100644
--- a/include/core/SkCanvas.h
+++ b/include/core/SkCanvas.h
@@ -332,6 +332,9 @@ public:
         @return The value to pass to restoreToCount() to balance this save()
     */
     int saveLayer(const SkRect* bounds, const SkPaint* paint);
+    int saveLayer(const SkRect& bounds, const SkPaint* paint) {
+        return this->saveLayer(&bounds, paint);
+    }
 
     /** DEPRECATED - use saveLayer(const SkRect*, const SkPaint*) instead.