Add SkNWayCanvas comment API overrides.

src/utils/SkNWayCanvas.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SkNWayCanvas.h"
 
 static SkBitmap make_noconfig_bm(int width, int height) {
@@ skipping 293 matching lines @@
     return this->INHERITED::setBounder(bounder);
 }
 
 SkDrawFilter* SkNWayCanvas::setDrawFilter(SkDrawFilter* filter) {
     Iter iter(fList);
     while (iter.next()) {
         iter->setDrawFilter(filter);
     }
     return this->INHERITED::setDrawFilter(filter);
 }
+
+void SkNWayCanvas::beginCommentGroup(const char* description) {
+    Iter iter(fList);
+    while (iter.next()) {
+        iter->beginCommentGroup(description);
+    }
+}
+
+void SkNWayCanvas::addComment(const char* kywd, const char* value) {
+    Iter iter(fList);
+    while (iter.next()) {
+        iter->addComment(kywd, value);
+    }
+}
+
+void SkNWayCanvas::endCommentGroup() {
+    Iter iter(fList);
+    while (iter.next()) {
+        iter->endCommentGroup();
+    }
+}