add replay entry point to SkPictureRecorder for Android

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.
  */
 
+#ifdef SK_BUILD_FOR_ANDROID
+#include "SkPicturePlayback.h"
+#endif
 #include "SkPictureRecorder.h"
 
 SkCanvas* SkPictureRecorder::beginRecording(int width, int height,
                                             SkBBHFactory* bbhFactory /* = NULL */,
                                             uint32_t recordFlags /* = 0 */) {
     fPicture.reset(SkNEW(SkPicture));
     return fPicture->beginRecording(width, height, bbhFactory, recordFlags);
 }
+
+#ifdef SK_BUILD_FOR_ANDROID
+void SkPictureRecorder::partialReplay(SkCanvas* canvas) {
+    if (NULL == fPicture.get() || NULL == canvas) {
+        // Not recording or nothing to replay into
+        return;
+    }
+
+    SkASSERT(NULL != fPicture->fRecord);
+
+    SkAutoTDelete<SkPicturePlayback> playback(SkPicture::FakeEndRecording(fPicture,
+                                                                          *fPicture->fRecord,
+                                                                          false));
+    playback->draw(*canvas, NULL);
+}
+#endif