media: Remove SetCdmReadyCB and CdmReadyCB (part 1).

media/base/test_helpers.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/base/test_helpers.h"
 
 #include <stdint.h>
 
 #include "base/bind.h"
 #include "base/logging.h"
@@ skipping 244 matching lines @@
   std::string header;
   int width = 0;
   int height = 0;
   bool success = pickle.ReadString(&header) && pickle.ReadInt(&width) &&
                  pickle.ReadInt(&height);
   return (success && header == kFakeVideoBufferHeader &&
           width == config.coded_size().width() &&
           height == config.coded_size().height());
 }
 
-CallbackPairChecker::CallbackPairChecker() : expecting_b_(false) {
-}
-
-CallbackPairChecker::~CallbackPairChecker() {
-  EXPECT_FALSE(expecting_b_);
-}
-
-void CallbackPairChecker::RecordACalled() {
-  EXPECT_FALSE(expecting_b_);
-  expecting_b_ = true;
-}
-
-void CallbackPairChecker::RecordBCalled() {
-  EXPECT_TRUE(expecting_b_);
-  expecting_b_ = false;
-}
-
 }  // namespace media