add SkDrawPictureCallback optional parameter to drawPicture(), which can abort the picture drawing.

src/core/SkPicture.cpp

 
 /*
  * Copyright 2007 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "SkPictureFlat.h"
@@ skipping 235 matching lines @@
         if (NULL != fRecord) {
             fRecord->endRecording();
             fPlayback = SkNEW_ARGS(SkPicturePlayback, (*fRecord));
             fRecord->unref();
             fRecord = NULL;
         }
     }
     SkASSERT(NULL == fRecord);
 }
 
-void SkPicture::draw(SkCanvas* surface) {
+void SkPicture::draw(SkCanvas* surface, SkDrawPictureCallback* callback) {
     this->endRecording();
     if (fPlayback) {
-        fPlayback->draw(*surface);
+        fPlayback->draw(*surface, callback);
     }
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 #include "SkStream.h"
 
 SkPicture::SkPicture(SkStream* stream) {
     this->initFromStream(stream, NULL, NULL);
 }
@@ skipping 65 matching lines @@
 }
 
 #ifdef SK_BUILD_FOR_ANDROID
 void SkPicture::abortPlayback() {
     if (NULL == fPlayback) {
         return;
     }
     fPlayback->abort();
 }
 #endif