Move Pipeline permanent callbacks into Pipeline::Client interface.

media/filters/pipeline_controller_unittest.cc

Index: media/filters/pipeline_controller_unittest.cc
diff --git a/media/filters/pipeline_controller_unittest.cc b/media/filters/pipeline_controller_unittest.cc
index eec11d8d7d46e87c29126801b727567e4bab80bd..6d6242c98bbc1b051b9b6ac4c8c852aff21504e4 100644
--- a/media/filters/pipeline_controller_unittest.cc
+++ b/media/filters/pipeline_controller_unittest.cc
@@ -26,7 +26,7 @@ using ::testing::StrictMock;
 
 namespace media {
 
-class PipelineControllerTest : public ::testing::Test {
+class PipelineControllerTest : public ::testing::Test, public Pipeline::Client {
  public:
   PipelineControllerTest()
       : pipeline_controller_(&pipeline_,
@@ -44,12 +44,8 @@ class PipelineControllerTest : public ::testing::Test {
   PipelineStatusCB StartPipeline(bool is_streaming, bool is_static) {
     EXPECT_FALSE(pipeline_controller_.IsStable());
     PipelineStatusCB start_cb;
-    EXPECT_CALL(pipeline_, Start(_, _, _, _, _, _, _, _, _, _))
-        .WillOnce(SaveArg<4>(&start_cb));
-    pipeline_controller_.Start(&demuxer_, is_streaming, is_static,
-                               base::Closure(), PipelineMetadataCB(),
-                               BufferingStateCB(), base::Closure(),
-                               AddTextTrackCB(), base::Closure());
+    EXPECT_CALL(pipeline_, Start(_, _, _, _)).WillOnce(SaveArg<3>(&start_cb));
+    pipeline_controller_.Start(&demuxer_, this, is_streaming, is_static);
     Mock::VerifyAndClear(&pipeline_);
     EXPECT_FALSE(pipeline_controller_.IsStable());
     return start_cb;