Refactor SkRecord opts, converting playback optimizations where possible.

tests/RecordCullingTest.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 "SkRecord.h"
 #include "SkRecordOpts.h"
 #include "SkRecorder.h"
 #include "SkRecords.h"
 
-struct PushCullScanner {
+struct SkipScanner {
     template <typename T> void operator()(const T&) {}
 
-    SkTDArray<unsigned> fPopOffsets;
+    void apply(const SkRecord& record) {
+        for (unsigned i = 0; i < record.count(); i++) {
+            record.visit(i, *this);
+        }
+    }
+
+    SkTDArray<unsigned> fSkips;
 };
 
-template <> void PushCullScanner::operator()(const SkRecords::PushCull& record) {
-    *fPopOffsets.append() = record.popOffset;
+template <> void SkipScanner::operator()(const SkRecords::PairedPushCull& r) {
+    *fSkips.append() = r.skip;
 }
 
 
 DEF_TEST(RecordCulling, r) {
     SkRecord record;
     SkRecorder recorder(SkRecorder::kWriteOnly_Mode, &record, 1920, 1080);
 
     recorder.drawRect(SkRect::MakeWH(1000, 10000), SkPaint());
 
     recorder.pushCull(SkRect::MakeWH(100, 100));
         recorder.drawRect(SkRect::MakeWH(10, 10), SkPaint());
         recorder.drawRect(SkRect::MakeWH(30, 30), SkPaint());
         recorder.pushCull(SkRect::MakeWH(5, 5));
             recorder.drawRect(SkRect::MakeWH(1, 1), SkPaint());
         recorder.popCull();
     recorder.popCull();
 
     SkRecordAnnotateCullingPairs(&record);
 
-    PushCullScanner scan;
-    record.visit(scan);
+    SkipScanner scan;
+    scan.apply(record);
 
-    REPORTER_ASSERT(r, 2 == scan.fPopOffsets.count());
-    REPORTER_ASSERT(r, 6 == scan.fPopOffsets[0]);
-    REPORTER_ASSERT(r, 2 == scan.fPopOffsets[1]);
+    REPORTER_ASSERT(r, 2 == scan.fSkips.count());
+    REPORTER_ASSERT(r, 6 == scan.fSkips[0]);
+    REPORTER_ASSERT(r, 2 == scan.fSkips[1]);
 }