move annotations to canvas virtual

src/core/SkPictureRecord.cpp

Index: src/core/SkPictureRecord.cpp
diff --git a/src/core/SkPictureRecord.cpp b/src/core/SkPictureRecord.cpp
index 2822a1ac1643a2c0681418b79ae1ec75baf4c326..2718ee999df0ea2d03e1c35ae3dbdc46d3fc5141 100644
--- a/src/core/SkPictureRecord.cpp
+++ b/src/core/SkPictureRecord.cpp
@@ -777,6 +777,18 @@ void SkPictureRecord::onDrawAtlas(const SkImage* atlas, const SkRSXform xform[],
     this->validate(initialOffset, size);
 }
 
+void SkPictureRecord::onDrawAnnotation(const SkRect& rect, const char key[], SkData* value) {
+    size_t keyLen = fWriter.WriteStringSize(key);
+    size_t valueLen = fWriter.WriteDataSize(value);
+    size_t size = 4 + sizeof(SkRect) + keyLen + valueLen;
+
+    size_t initialOffset = this->addDraw(DRAW_ANNOTATION, &size);
+    this->addRect(rect);
+    fWriter.writeString(key);
+    fWriter.writeData(value);
+    this->validate(initialOffset, size);
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 
 SkSurface* SkPictureRecord::onNewSurface(const SkImageInfo& info, const SkSurfaceProps&) {