move annotations to canvas virtual

src/utils/SkDumpCanvas.cpp

Index: src/utils/SkDumpCanvas.cpp
diff --git a/src/utils/SkDumpCanvas.cpp b/src/utils/SkDumpCanvas.cpp
index 916c32a6557b1caac69fc17b008d1c836fc253c2..75fa836a6a10a0d681cc478d1fa920ee94b3a4ba 100644
--- a/src/utils/SkDumpCanvas.cpp
+++ b/src/utils/SkDumpCanvas.cpp
@@ -9,6 +9,7 @@
 #include "SkDumpCanvas.h"
 
 #ifdef SK_DEVELOPER
+#include "SkData.h"
 #include "SkPatchUtils.h"
 #include "SkPicture.h"
 #include "SkPixelRef.h"
@@ -482,6 +483,13 @@ void SkDumpCanvas::onDrawPatch(const SkPoint cubics[12], const SkColor colors[4]
               texCoords[2].x(), texCoords[2].y(), texCoords[3].x(), texCoords[3].y());
 }
 
+void SkDumpCanvas::onDrawAnnotation(const SkRect& rect, const char key[], SkData* value) {
+    SkString str;
+    toString(rect, &str);
+    this->dump(kDrawAnnotation_Verb, nullptr, "drawAnnotation(%s \"%s\" (%zu))",
+               str.c_str(), key, value ? value->size() : 0);
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////////////////////////