Add support for multiple V4L2 video devices of the same type.

media/gpu/ipc/service/gpu_jpeg_decode_accelerator.cc

 // 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.
 
 #include "media/gpu/ipc/service/gpu_jpeg_decode_accelerator.h"
 
 #include <stdint.h>
 
 #include <memory>
 #include <utility>
@@ skipping 366 matching lines @@
 bool GpuJpegDecodeAccelerator::Send(IPC::Message* message) {
   DCHECK(CalledOnValidThread());
   return channel_->Send(message);
 }
 
 // static
 std::unique_ptr<JpegDecodeAccelerator> GpuJpegDecodeAccelerator::CreateV4L2JDA(
     const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner) {
   std::unique_ptr<JpegDecodeAccelerator> decoder;
 #if defined(OS_CHROMEOS) && defined(USE_V4L2_CODEC)
-  scoped_refptr<V4L2Device> device =
-      V4L2Device::Create(V4L2Device::kJpegDecoder);
+  scoped_refptr<V4L2Device> device = V4L2Device::Create();
   if (device)
     decoder.reset(new V4L2JpegDecodeAccelerator(device, io_task_runner));
 #endif
   return decoder;
 }
 
 // static
 std::unique_ptr<JpegDecodeAccelerator> GpuJpegDecodeAccelerator::CreateVaapiJDA(
     const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner) {
   std::unique_ptr<JpegDecodeAccelerator> decoder;
@@ skipping 12 matching lines @@
   for (const auto& create_jda_function : create_jda_fps) {
     std::unique_ptr<JpegDecodeAccelerator> accelerator =
         (*create_jda_function)(base::ThreadTaskRunnerHandle::Get());
     if (accelerator && accelerator->IsSupported())
       return true;
   }
   return false;
 }
 
 }  // namespace media