Move Pipeline permanent callbacks into Pipeline::Client interface.

media/base/pipeline_impl_unittest.cc

Index: media/base/pipeline_impl_unittest.cc
diff --git a/media/base/pipeline_impl_unittest.cc b/media/base/pipeline_impl_unittest.cc
index d08ecf1c173c58526069edb5d0c1cf23059e88ad..5166202de2c3f726e54837e2600907bfa09a7cfc 100644
--- a/media/base/pipeline_impl_unittest.cc
+++ b/media/base/pipeline_impl_unittest.cc
@@ -19,6 +19,7 @@
 #include "media/base/gmock_callback_support.h"
 #include "media/base/media_log.h"
 #include "media/base/mock_filters.h"
+#include "media/base/pipeline_client.h"
 #include "media/base/test_helpers.h"
 #include "media/base/text_renderer.h"
 #include "media/base/text_track_config.h"
@@ -97,8 +98,9 @@ class PipelineImplTest : public ::testing::Test {
   };
 
   PipelineImplTest()
-      : pipeline_(
-            new PipelineImpl(message_loop_.task_runner(), new MediaLog())),
+      : pipeline_(new PipelineImpl(&pipeline_client_,
+                                   message_loop_.task_runner(),
+                                   new MediaLog())),
         demuxer_(new StrictMock<MockDemuxer>()),
         scoped_renderer_(new StrictMock<MockRenderer>()),
         renderer_(scoped_renderer_.get()) {
@@ -360,6 +362,7 @@ class PipelineImplTest : public ::testing::Test {
   StrictMock<CallbackHelper> callbacks_;
   base::SimpleTestTickClock test_tick_clock_;
   base::MessageLoop message_loop_;
+  MockPipelineClient pipeline_client_;
   scoped_ptr<PipelineImpl> pipeline_;
 
   scoped_ptr<StrictMock<MockDemuxer>> demuxer_;