Delete AVDACopyingBackingStrategy and rename AVDADeferredRenderingBackingStrategy

media/gpu/avda_return_on_failure.h

-// Copyright 2015 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.
-
-#ifndef MEDIA_GPU_AVDA_RETURN_ON_FAILURE_H_
-#define MEDIA_GPU_AVDA_RETURN_ON_FAILURE_H_
-
-#include "media/video/video_decode_accelerator.h"
-
-// Helper macros for dealing with failure.  If |result| evaluates false, emit
-// |log| to ERROR, register |error| with the decoder, and return.  This will
-// also transition to the error state, stopping further decoding.
-// This is meant to be used only within AndroidVideoDecoder and the various
-// backing strategies.  |provider| must support PostError.  The varargs
-// can be used for the return value.
-#define RETURN_ON_FAILURE(provider, result, log, error, ...)         \
-  do {                                                               \
-    if (!(result)) {                                                 \
-      DLOG(ERROR) << log;                                            \
-      provider->PostError(FROM_HERE, VideoDecodeAccelerator::error); \
-      return __VA_ARGS__;                                            \
-    }                                                                \
-  } while (0)
-
-// Similar to the above, with some handy boilerplate savings.  The varargs
-// can be used for the return value.
-#define RETURN_IF_NULL(ptr, ...)                                   \
-  RETURN_ON_FAILURE(state_provider_, ptr, "Got null for " << #ptr, \
-                    ILLEGAL_STATE, ##__VA_ARGS__);
-
-// Return null if !ptr.
-#define RETURN_NULL_IF_NULL(ptr) RETURN_IF_NULL(ptr, 0)
-
-#endif  // MEDIA_GPU_AVDA_RETURN_ON_FAILURE_H_