SkRecordDraw: skip draw ops when the clip is empty

tests/RecordCullingTest.cpp

 #include "Test.h"
 
 #include "SkRecord.h"
 #include "SkRecordCulling.h"
 #include "SkRecorder.h"
 #include "SkRecords.h"
 
 struct PushCullScanner {
     template <typename T> void operator()(const T&) {}
 
     SkTDArray<unsigned> fPopOffsets;
 };
 
 template <> void PushCullScanner::operator()(const SkRecords::PushCull& record) {
     *fPopOffsets.append() = record.popOffset;
 }
 
 
 DEF_TEST(RecordCulling, r) {
     SkRecord record;
-    SkRecorder recorder(&record, 1920, 1080);
+    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);
 
     REPORTER_ASSERT(r, 2 == scan.fPopOffsets.count());
     REPORTER_ASSERT(r, 6 == scan.fPopOffsets[0]);
     REPORTER_ASSERT(r, 2 == scan.fPopOffsets[1]);
 }