move annotations to canvas virtual

src/core/SkRecorder.cpp

Index: src/core/SkRecorder.cpp
diff --git a/src/core/SkRecorder.cpp b/src/core/SkRecorder.cpp
index 01c28dfc2b49ebcf8bedd8e1069c224c9dda1d74..f9fd8bb3748e8ebfb5758f21c0a1a133a934f88d 100644
--- a/src/core/SkRecorder.cpp
+++ b/src/core/SkRecorder.cpp
@@ -332,6 +332,10 @@ void SkRecorder::onDrawAtlas(const SkImage* atlas, const SkRSXform xform[], cons
            this->copy(cull));
 }
 
+void SkRecorder::onDrawAnnotation(const SkRect& rect, const char key[], SkData* value) {
+    APPEND(DrawAnnotation, rect, SkString(key), value);
+}
+
 void SkRecorder::willSave() {
     APPEND(Save);
 }