Allow reset of the SkPictureRecorder cull rect before endRecording.

src/core/SkPictureRecorder.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 "SkBigPicture.h"
 #include "SkData.h"
 #include "SkDrawable.h"
@@ skipping 77 matching lines @@
         subPictureBytes += SkPictureUtils::ApproximateBytesUsed(pictList->begin()[i]);
     }
     return SkNEW_ARGS(SkBigPicture, (fCullRect,
                                      fRecord.detach(),
                                      pictList,
                                      fBBH.detach(),
                                      saveLayerData.detach(),
                                      subPictureBytes));
 }
 
+SkPicture* SkPictureRecorder::endRecordingAsPicture(const SkRect& cullRect) {
+    fCullRect = cullRect;
+    return this->endRecordingAsPicture();
+}
+
+
 void SkPictureRecorder::partialReplay(SkCanvas* canvas) const {
     if (NULL == canvas) {
         return;
     }
 
     int drawableCount = 0;
     SkDrawable* const* drawables = NULL;
     SkDrawableList* drawableList = fRecorder->getDrawableList();
     if (drawableList) {
         drawableCount = drawableList->count();
@@ skipping 84 matching lines @@
                                         (fRecord, fBBH, fRecorder->detachDrawableList(),
                                          fCullRect,
                                          SkToBool(fFlags & kComputeSaveLayerInfo_RecordFlag)));
 
     // release our refs now, so only the drawable will be the owner.
     fRecord.reset(NULL);
     fBBH.reset(NULL);
 
     return drawable;
 }