option to return drawable from recording

src/core/SkRecord.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkRecord_DEFINED
 #define SkRecord_DEFINED
 
 #include "SkRecords.h"
 #include "SkTLogic.h"
 #include "SkTemplates.h"
 #include "SkVarAlloc.h"
 
 // SkRecord (REC-ord) represents a sequence of SkCanvas calls, saved for future use.
 // These future uses may include: replay, optimization, serialization, or combinations of those.
 //
 // Though an enterprising user may find calling alloc(), append(), visit(), and mutate() enough to
 // work with SkRecord, you probably want to look at SkRecorder which presents an SkCanvas interface
 // for creating an SkRecord, and SkRecordDraw which plays an SkRecord back into another SkCanvas.
 //
 // SkRecord often looks like it's compatible with any type T, but really it's compatible with any
 // type T which has a static const SkRecords::Type kType.  That is to say, SkRecord is compatible
 // only with SkRecords::* structs defined in SkRecords.h.  Your compiler will helpfully yell if you
 // get this wrong.
 
-class SkRecord : SkNoncopyable {
+class SkRecord : public SkNVRefCnt<SkRecord> {
     enum {
         kFirstReserveCount = 64 / sizeof(void*),
     };
 public:
     SkRecord() : fCount(0), fReserved(0) {}
 
     ~SkRecord() {
         Destroyer destroyer;
         for (unsigned i = 0; i < this->count(); i++) {
             this->mutate<void>(i, destroyer);
@@ skipping 194 matching lines @@
 
     // fCount and fReserved measure both fRecords and fTypes, which always grow in lock step.
     unsigned fCount;
     unsigned fReserved;
     SkAutoTMalloc<Record> fRecords;
     SkAutoTMalloc<Type8> fTypes;
     SkVarAlloc fAlloc;
     // Strangely the order of these fields matters.  If the unsigneds don't go first we're 56 bytes.
     // tomhudson and mtklein have no idea why.
 };
-SK_COMPILE_ASSERT(sizeof(SkRecord) <= 48, SkRecordSize);
+SK_COMPILE_ASSERT(sizeof(SkRecord) <= 56, SkRecordSize);
 
 #endif//SkRecord_DEFINED