Require Renderer::Initialize() to return a status code via callback.

media/filters/renderer_impl_unittest.cc

Index: media/filters/renderer_impl_unittest.cc
diff --git a/media/filters/renderer_impl_unittest.cc b/media/filters/renderer_impl_unittest.cc
index ec8e3826ba451e1fbd8b88a1a214daabe60e8f2b..d8bb49ef815332354cea465841495ebad518aad0 100644
--- a/media/filters/renderer_impl_unittest.cc
+++ b/media/filters/renderer_impl_unittest.cc
@@ -43,7 +43,7 @@ class RendererImplTest : public ::testing::Test {
     CallbackHelper() {}
     virtual ~CallbackHelper() {}
 
-    MOCK_METHOD0(OnInitialize, void());
+    MOCK_METHOD1(OnInitialize, void(PipelineStatus));
     MOCK_METHOD0(OnFlushed, void());
     MOCK_METHOD0(OnEnded, void());
     MOCK_METHOD1(OnError, void(PipelineStatus));
@@ -103,10 +103,7 @@ class RendererImplTest : public ::testing::Test {
   }
 
   void InitializeAndExpect(PipelineStatus start_status) {
-    if (start_status != PIPELINE_OK)
-      EXPECT_CALL(callbacks_, OnError(start_status));
-
-    EXPECT_CALL(callbacks_, OnInitialize());
+    EXPECT_CALL(callbacks_, OnInitialize(start_status));
 
     if (start_status == PIPELINE_OK && audio_stream_) {
       EXPECT_CALL(*audio_renderer_, GetTimeSource())