Move AudioRenderer out of Filter heirarchy.

media/base/mock_filters.cc

Index: media/base/mock_filters.cc
diff --git a/media/base/mock_filters.cc b/media/base/mock_filters.cc
index cd6e71c7dea550dbfbee92967b7af16c087dfb20..ed3d0f551d32ee1062cf0b4f7fe278d353b4006a 100644
--- a/media/base/mock_filters.cc
+++ b/media/base/mock_filters.cc
@@ -81,29 +81,6 @@ scoped_ptr<FilterCollection> MockFilterCollection::Create() {
   return collection.Pass();
 }
 
-void RunPipelineStatusCB(const PipelineStatusCB& status_cb) {
-  status_cb.Run(PIPELINE_OK);
-}
-
-void RunPipelineStatusCB2(::testing::Unused,
-                          const PipelineStatusCB& status_cb) {
-  status_cb.Run(PIPELINE_OK);
-}
-
-void RunPipelineStatusCB3(::testing::Unused, const PipelineStatusCB& status_cb,
-                          ::testing::Unused) {
-  status_cb.Run(PIPELINE_OK);
-}
-
-void RunPipelineStatusCB4(::testing::Unused, const PipelineStatusCB& status_cb,
-                          ::testing::Unused, ::testing::Unused) {
-  status_cb.Run(PIPELINE_OK);
-}
-
-void RunClosure(const base::Closure& closure) {
-  closure.Run();
-}
-
 MockFilter::MockFilter() : host_(NULL) {}
 
 MockFilter::~MockFilter() {}