Allow transitioning to HAVE_METADATA before pipeline initialization completes.

media/filters/pipeline_integration_test_base.cc

Index: media/filters/pipeline_integration_test_base.cc
diff --git a/media/filters/pipeline_integration_test_base.cc b/media/filters/pipeline_integration_test_base.cc
index 3e01b572c6604dbc949911ba885a9883e01f2fec..3036ec7b803cbebf21a71d2da28f72f8d9407c5b 100644
--- a/media/filters/pipeline_integration_test_base.cc
+++ b/media/filters/pipeline_integration_test_base.cc
@@ -91,7 +91,8 @@ bool PipelineIntegrationTestBase::Start(const std::string& url,
       CreateFilterCollection(url),
       base::Bind(&PipelineIntegrationTestBase::OnEnded, base::Unretained(this)),
       base::Bind(&PipelineIntegrationTestBase::OnError, base::Unretained(this)),
-      QuitOnStatusCB(expected_status));
+      QuitOnStatusCB(expected_status),
+      Pipeline::ReadyStateCB());
   message_loop_.Run();
   return (pipeline_status_ == PIPELINE_OK);
 }
@@ -109,7 +110,8 @@ bool PipelineIntegrationTestBase::Start(const std::string& url) {
       base::Bind(&PipelineIntegrationTestBase::OnEnded, base::Unretained(this)),
       base::Bind(&PipelineIntegrationTestBase::OnError, base::Unretained(this)),
       base::Bind(&PipelineIntegrationTestBase::OnStatusCallback,
-                 base::Unretained(this)));
+                 base::Unretained(this)),
+      Pipeline::ReadyStateCB());
   message_loop_.Run();
   return (pipeline_status_ == PIPELINE_OK);
 }