Revert of Support multiple video decoders and encoders

content/common/gpu/media/v4l2_video_encode_accelerator.cc

 // Copyright 2014 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 <fcntl.h>
 #include <linux/videodev2.h>
 #include <poll.h>
 #include <sys/eventfd.h>
 #include <sys/ioctl.h>
 #include <sys/mman.h>
@@ skipping 41 matching lines @@
   BitstreamBufferRef(int32 id, scoped_ptr<base::SharedMemory> shm, size_t size)
       : id(id), shm(shm.Pass()), size(size) {}
   const int32 id;
   const scoped_ptr<base::SharedMemory> shm;
   const size_t size;
 };
 
 V4L2VideoEncodeAccelerator::InputRecord::InputRecord() : at_device(false) {
 }
 
-V4L2VideoEncodeAccelerator::InputRecord::~InputRecord() {
-}
-
 V4L2VideoEncodeAccelerator::OutputRecord::OutputRecord()
     : at_device(false), address(NULL), length(0) {
 }
 
-V4L2VideoEncodeAccelerator::OutputRecord::~OutputRecord() {
-}
-
 V4L2VideoEncodeAccelerator::V4L2VideoEncodeAccelerator(
     scoped_ptr<V4L2Device> device)
     : child_message_loop_proxy_(base::MessageLoopProxy::current()),
       output_buffer_byte_size_(0),
       device_input_format_(media::VideoFrame::UNKNOWN),
       input_planes_count_(0),
       output_format_fourcc_(0),
       encoder_state_(kUninitialized),
       stream_header_size_(0),
       device_(device.Pass()),
@@ skipping 1013 matching lines @@
   reqbufs.count = 0;
   reqbufs.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
   reqbufs.memory = V4L2_MEMORY_MMAP;
   IOCTL_OR_LOG_ERROR(VIDIOC_REQBUFS, &reqbufs);
 
   output_buffer_map_.clear();
   free_output_buffers_.clear();
 }
 
 }  // namespace content