Revert of Support multiple video decoders and encoders

content/common/gpu/media/v4l2_video_decode_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 <dlfcn.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <linux/videodev2.h>
 #include <poll.h>
 #include <sys/eventfd.h>
@@ skipping 56 matching lines @@
       base::WeakPtr<Client>& client,
       scoped_refptr<base::MessageLoopProxy>& client_message_loop_proxy,
       base::SharedMemory* shm,
       size_t size,
       int32 input_id);
   ~BitstreamBufferRef();
   const base::WeakPtr<Client> client;
   const scoped_refptr<base::MessageLoopProxy> client_message_loop_proxy;
   const scoped_ptr<base::SharedMemory> shm;
   const size_t size;
-  size_t bytes_used;
+  off_t bytes_used;
   const int32 input_id;
 };
 
 struct V4L2VideoDecodeAccelerator::EGLSyncKHRRef {
   EGLSyncKHRRef(EGLDisplay egl_display, EGLSyncKHR egl_sync);
   ~EGLSyncKHRRef();
   EGLDisplay const egl_display;
   EGLSyncKHR egl_sync;
 };
 
@@ skipping 1846 matching lines @@
   gfx::Size new_size(base::checked_cast<int>(format.fmt.pix_mp.width),
                      base::checked_cast<int>(format.fmt.pix_mp.height));
   if (frame_buffer_size_ != new_size) {
     DVLOG(3) << "IsResolutionChangeNecessary(): Resolution change detected";
     return true;
   }
   return false;
 }
 
 }  // namespace content