Convert Filter::Seek() to use new callback system.

media/filters/omx_video_decoder.cc

Index: media/filters/omx_video_decoder.cc
diff --git a/media/filters/omx_video_decoder.cc b/media/filters/omx_video_decoder.cc
index 43f8100faf0cda2c81af265695e03ae18033dfb5..63715e28a9e5432946adff3d20d3a76e6df995f8 100644
--- a/media/filters/omx_video_decoder.cc
+++ b/media/filters/omx_video_decoder.cc
@@ -156,30 +156,29 @@ void OmxVideoDecoder::OnFlushComplete() {
   pts_stream_.Flush();
 }
 
-void OmxVideoDecoder::Seek(base::TimeDelta time,
-                           FilterCallback* callback) {
+void OmxVideoDecoder::Seek(base::TimeDelta time, const FilterStatusCB& cb) {
   if (MessageLoop::current() != message_loop_) {
      message_loop_->PostTask(FROM_HERE,
                               NewRunnableMethod(this,
                                                 &OmxVideoDecoder::Seek,
                                                 time,
-                                                callback));
+                                                cb));
      return;
   }
 
   DCHECK_EQ(MessageLoop::current(), message_loop_);
-  DCHECK(!seek_callback_.get());
+  DCHECK(seek_cb_.is_null());
 
   pts_stream_.Seek(time);
-  seek_callback_.reset(callback);
+  seek_cb_ = cb;
   decode_engine_->Seek();
 }
 
 void OmxVideoDecoder::OnSeekComplete() {
   DCHECK_EQ(MessageLoop::current(), message_loop_);
-  DCHECK(seek_callback_.get());
+  DCHECK(!seek_cb_.is_null());
 
-  AutoCallbackRunner done_runner(seek_callback_.release());
+  CopyAndResetCB(seek_cb_).Run(PIPELINE_OK);
 }
 
 void OmxVideoDecoder::OnError() {