Revert of media: Simplify {Audio|Video}Decoder initialization callback.

media/base/test_helpers.cc

Index: media/base/test_helpers.cc
diff --git a/media/base/test_helpers.cc b/media/base/test_helpers.cc
index f4ba9915007b62ce793e9429c5f656b5690c96c8..bbfbd64a5a906aa4e162de32cc4e9d765a062826 100644
--- a/media/base/test_helpers.cc
+++ b/media/base/test_helpers.cc
@@ -27,7 +27,6 @@
  public:
   MockCallback();
   MOCK_METHOD0(Run, void());
-  MOCK_METHOD1(RunWithBool, void(bool));
   MOCK_METHOD1(RunWithStatus, void(PipelineStatus));
 
  protected:
@@ -45,12 +44,6 @@
   StrictMock<MockCallback>* callback = new StrictMock<MockCallback>();
   EXPECT_CALL(*callback, Run());
   return base::Bind(&MockCallback::Run, callback);
-}
-
-base::Callback<void(bool)> NewExpectedBoolCB(bool success) {
-  StrictMock<MockCallback>* callback = new StrictMock<MockCallback>();
-  EXPECT_CALL(*callback, RunWithBool(success));
-  return base::Bind(&MockCallback::RunWithBool, callback);
 }
 
 PipelineStatusCB NewExpectedStatusCB(PipelineStatus status) {