Remove use of PipelineStatus from BufferedDataSource and FileDataSource.

media/filters/file_data_source_unittest.cc

Index: media/filters/file_data_source_unittest.cc
diff --git a/media/filters/file_data_source_unittest.cc b/media/filters/file_data_source_unittest.cc
index 4ebb63f6b450ae8689fc2e5dd0567774bf7cefcd..b0d79881e0d4532490466632936106c8a3dabd8f 100644
--- a/media/filters/file_data_source_unittest.cc
+++ b/media/filters/file_data_source_unittest.cc
@@ -56,7 +56,7 @@ TEST(FileDataSourceTest, OpenFile) {
 
   scoped_refptr<FileDataSource> filter(new FileDataSource());
   filter->set_host(&host);
-  EXPECT_EQ(PIPELINE_OK, filter->Initialize(TestFileURL()));
+  EXPECT_TRUE(filter->Initialize(TestFileURL()));
 
   filter->Stop(NewExpectedClosure());
 }
@@ -71,7 +71,7 @@ TEST(FileDataSourceTest, ReadData) {
   scoped_refptr<FileDataSource> filter(new FileDataSource());
 
   filter->set_host(&host);
-  EXPECT_EQ(PIPELINE_OK, filter->Initialize(TestFileURL()));
+  EXPECT_TRUE(filter->Initialize(TestFileURL()));
 
   EXPECT_TRUE(filter->GetSize(&size));
   EXPECT_EQ(10, size);