Revert of Support multiple video decoders and encoders

content/common/gpu/media/v4l2_image_processor.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 30 matching lines @@
   do {                                                             \
     if (device_->Ioctl(type, arg) != 0)                            \
       PLOG(ERROR) << __func__ << "(): ioctl() failed: " << #type;  \
   } while (0)
 
 namespace content {
 
 V4L2ImageProcessor::InputRecord::InputRecord() : at_device(false) {
 }
 
-V4L2ImageProcessor::InputRecord::~InputRecord() {
-}
-
 V4L2ImageProcessor::OutputRecord::OutputRecord()
     : at_device(false), at_client(false) {
 }
 
-V4L2ImageProcessor::OutputRecord::~OutputRecord() {
-}
-
 V4L2ImageProcessor::JobRecord::JobRecord() {
 }
 
-V4L2ImageProcessor::JobRecord::~JobRecord() {
-}
-
 V4L2ImageProcessor::V4L2ImageProcessor(scoped_ptr<V4L2Device> device)
     : input_format_(media::VideoFrame::UNKNOWN),
       output_format_(media::VideoFrame::UNKNOWN),
       input_format_fourcc_(0),
       output_format_fourcc_(0),
       input_planes_count_(0),
       output_planes_count_(0),
       child_message_loop_proxy_(base::MessageLoopProxy::current()),
       device_(device.Pass()),
       device_thread_("V4L2ImageProcessorThread"),
@@ skipping 642 matching lines @@
     output_record.at_device = false;
     if (!output_record.at_client)
       free_output_buffers_.push_back(i);
   }
   output_buffer_queued_count_ = 0;
 
   return true;
 }
 
 }  // namespace content