media: Clean up MediaCodecBridge and remove subclasses

media/base/android/mock_media_codec_bridge.cc

 // Copyright 2016 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/android/mock_media_codec_bridge.h"
 
 #include "media/base/encryption_scheme.h"
 #include "media/base/subsample_entry.h"
 
 using ::testing::_;
 using ::testing::Return;
 
 namespace media {
 
 MockMediaCodecBridge::MockMediaCodecBridge() {
   ON_CALL(*this, DequeueInputBuffer(_, _))
-      .WillByDefault(Return(MEDIA_CODEC_DEQUEUE_INPUT_AGAIN_LATER));
+      .WillByDefault(Return(MEDIA_CODEC_TRY_AGAIN_LATER));
   ON_CALL(*this, DequeueOutputBuffer(_, _, _, _, _, _, _))
-      .WillByDefault(Return(MEDIA_CODEC_DEQUEUE_OUTPUT_AGAIN_LATER));
+      .WillByDefault(Return(MEDIA_CODEC_TRY_AGAIN_LATER));
 }
 
-MockMediaCodecBridge::~MockMediaCodecBridge() {}
-
 }  // namespace media