Remove the SkCanvas comment API

tests/RecorderTest.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "Test.h"
 
 #include "SkPictureRecorder.h"
@@ skipping 32 matching lines @@
     SkRecord record;
     SkRecorder recorder(&record, 1920, 1080);
 
     recorder.drawRect(SkRect::MakeWH(10, 10), SkPaint());
 
     Tally tally;
     tally.apply(record);
     REPORTER_ASSERT(r, 1 == tally.count<SkRecords::DrawRect>());
 }
 
-// All of Skia will work fine without support for comment groups, but
-// Chrome's inspector can break.  This serves as a simple regression test.
-DEF_TEST(Recorder_CommentGroups, r) {
-    SkRecord record;
-    SkRecorder recorder(&record, 1920, 1080);
-
-    recorder.beginCommentGroup("test");
-        recorder.addComment("foo", "bar");
-        recorder.addComment("baz", "quux");
-    recorder.endCommentGroup();
-
-    Tally tally;
-    tally.apply(record);
-
-    REPORTER_ASSERT(r, 1 == tally.count<SkRecords::BeginCommentGroup>());
-    REPORTER_ASSERT(r, 2 == tally.count<SkRecords::AddComment>());
-    REPORTER_ASSERT(r, 1 == tally.count<SkRecords::EndCommentGroup>());
-}
-
 // Regression test for leaking refs held by optional arguments.
 DEF_TEST(Recorder_RefLeaking, r) {
     // We use SaveLayer to test:
     //   - its SkRect argument is optional and SkRect is POD.  Just testing that that works.
     //   - its SkPaint argument is optional and SkPaint is not POD.  The bug was here.
 
     SkRect bounds = SkRect::MakeWH(320, 240);
     SkPaint paint;
     paint.setShader(SkShader::CreateEmptyShader())->unref();
 
@@ skipping 38 matching lines @@
         recorder.drawImageRect(image.get(), 0, SkRect::MakeWH(100, 100));
         REPORTER_ASSERT(reporter, !image->unique());
 
         Tally tally;
         tally.apply(record);
 
         REPORTER_ASSERT(reporter, 1 == tally.count<SkRecords::DrawImageRect>());
     }
     REPORTER_ASSERT(reporter, image->unique());
 }