Move annotations to canvas virtual (patchset #8 id:140001 of https://codereview.chromium.org/1744103002/ )"

Need to land chrome change first https://codereview.chromium.org/1766723003/

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1758023003

TBR=

Review URL: https://codereview.chromium.org/1758023003
diff --git a/src/core/SkRecorder.cpp b/src/core/SkRecorder.cpp
index 01c28df..f9fd8bb 100644
--- a/src/core/SkRecorder.cpp
+++ b/src/core/SkRecorder.cpp
@@ -332,6 +332,10 @@
            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);
 }