Move Pipeline permanent callbacks into Pipeline::Client interface.

media/test/pipeline_integration_test_base.cc

Index: media/test/pipeline_integration_test_base.cc
diff --git a/media/test/pipeline_integration_test_base.cc b/media/test/pipeline_integration_test_base.cc
index 17647ba7ad07dd725c6998ae55f1864f348b398b..975f5bc67965493c64756141d600694a68c60b61 100644
--- a/media/test/pipeline_integration_test_base.cc
+++ b/media/test/pipeline_integration_test_base.cc
@@ -43,7 +43,8 @@ const char kNullAudioHash[] = "0.00,0.00,0.00,0.00,0.00,0.00,";
 PipelineIntegrationTestBase::PipelineIntegrationTestBase()
     : hashing_enabled_(false),
       clockless_playback_(false),
-      pipeline_(new PipelineImpl(message_loop_.task_runner(), new MediaLog())),
+      pipeline_(
+          new PipelineImpl(this, message_loop_.task_runner(), new MediaLog())),
       ended_(false),
       pipeline_status_(PIPELINE_OK),
       last_video_frame_format_(PIXEL_FORMAT_UNKNOWN),