expose api to count the number of ops in a picture

src/core/SkPictureData.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkPictureData_DEFINED
 #define SkPictureData_DEFINED
 
@@ skipping 65 matching lines @@
 #endif
     SkPictureData(const SkPictureRecord& record, const SkPictInfo&, bool deepCopyOps);
     static SkPictureData* CreateFromStream(SkStream*,
                                            const SkPictInfo&,
                                            SkPicture::InstallPixelRefProc);
     static SkPictureData* CreateFromBuffer(SkReadBuffer&, const SkPictInfo&);
 
     virtual ~SkPictureData();
 
     const SkPicture::OperationList* getActiveOps(const SkIRect& queryRect) const;
+    int countOps() const { return fContentInfo.numOperations(); }
 
     void serialize(SkWStream*, SkPicture::EncodeBitmap) const;
     void flatten(SkWriteBuffer&) const;
 
     bool containsBitmaps() const;
 
     const SkData* opData() const { return fOpData; }
 
 protected:
     explicit SkPictureData(const SkPictInfo& info);
@@ skipping 94 matching lines @@
 
     const SkPictInfo fInfo;
 
     static void WriteFactories(SkWStream* stream, const SkFactorySet& rec);
     static void WriteTypefaces(SkWStream* stream, const SkRefCntSet& rec);
 
     void initForPlayback() const;
 };
 
 #endif