Replace init_cb in Renderer::Initialize() with base::Closure.

media/base/pipeline_unittest.cc

Index: media/base/pipeline_unittest.cc
diff --git a/media/base/pipeline_unittest.cc b/media/base/pipeline_unittest.cc
index cca82ebb7d4a51b72474d3d1dbbd658e2e07f964..af5f9497c28a3684d2efec448b6225f48901a737 100644
--- a/media/base/pipeline_unittest.cc
+++ b/media/base/pipeline_unittest.cc
@@ -166,7 +166,7 @@ class PipelineTest : public ::testing::Test {
     EXPECT_CALL(*renderer_, Initialize(_, _, _, _, _, _))
         .WillOnce(DoAll(SaveArg<2>(&ended_cb_),
                         SaveArg<4>(&buffering_state_cb_),
-                        RunCallback<0>(PIPELINE_OK)));
+                        RunCallback<0>()));
     EXPECT_CALL(*renderer_, HasAudio()).WillRepeatedly(Return(audio_stream()));
     EXPECT_CALL(*renderer_, HasVideo()).WillRepeatedly(Return(video_stream()));
   }
@@ -830,12 +830,12 @@ class PipelineTeardownTest : public PipelineTest {
       if (stop_or_error == kStop) {
         EXPECT_CALL(*renderer_, Initialize(_, _, _, _, _, _))
             .WillOnce(DoAll(Stop(pipeline_.get(), stop_cb),
-                            RunCallback<0>(PIPELINE_OK)));
+                            RunCallback<0>()));
         ExpectPipelineStopAndDestroyPipeline();
       } else {
         status = PIPELINE_ERROR_INITIALIZATION_FAILED;
         EXPECT_CALL(*renderer_, Initialize(_, _, _, _, _, _))
-            .WillOnce(RunCallback<0>(status));
+            .WillOnce(DoAll(RunCallback<3>(status), RunCallback<0>()));
       }
 
       EXPECT_CALL(*demuxer_, Stop());
@@ -844,7 +844,7 @@ class PipelineTeardownTest : public PipelineTest {
 
     EXPECT_CALL(*renderer_, Initialize(_, _, _, _, _, _))
         .WillOnce(DoAll(SaveArg<4>(&buffering_state_cb_),
-                        RunCallback<0>(PIPELINE_OK)));
+                        RunCallback<0>()));
 
     EXPECT_CALL(callbacks_, OnMetadata(_));