Add push/pop cull to SkRecord.

src/record/SkRecorder.cpp

Index: src/record/SkRecorder.cpp
diff --git a/src/record/SkRecorder.cpp b/src/record/SkRecorder.cpp
index 1edcc52239fa950d2733bd80cb01b299d5945684..fabb4be861742544aed5abcbffcd6b8a4eb193f9 100644
--- a/src/record/SkRecorder.cpp
+++ b/src/record/SkRecorder.cpp
@@ -195,6 +195,14 @@ void SkRecorder::willRestore() {
     APPEND(Restore);
 }
 
+void SkRecorder::onPushCull(const SkRect& rect) {
+    APPEND(PushCull, rect);
+}
+
+void SkRecorder::onPopCull() {
+    APPEND(PopCull);
+}
+
 void SkRecorder::didConcat(const SkMatrix& matrix) {
     APPEND(Concat, matrix);
 }