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

media/gpu/video_encode_accelerator_unittest.cc

Index: media/gpu/video_encode_accelerator_unittest.cc
diff --git a/media/gpu/video_encode_accelerator_unittest.cc b/media/gpu/video_encode_accelerator_unittest.cc
index e684cb08e42019a44d99fc06b256e69bb3c3ed2e..8dab8276abc9b7178a60521dae2f60ce10ba2f0a 100644
--- a/media/gpu/video_encode_accelerator_unittest.cc
+++ b/media/gpu/video_encode_accelerator_unittest.cc
@@ -1131,7 +1131,8 @@ std::unique_ptr<VideoEncodeAccelerator> VEAClient::CreateFakeVEA() {
 std::unique_ptr<VideoEncodeAccelerator> VEAClient::CreateV4L2VEA() {
   std::unique_ptr<VideoEncodeAccelerator> encoder;
 #if defined(OS_CHROMEOS) && defined(USE_V4L2_CODEC)
-  scoped_refptr<V4L2Device> device = V4L2Device::Create(V4L2Device::kEncoder);
+  scoped_refptr<V4L2Device> device =
+      V4L2Device::Create(V4L2Device::Type::kEncoder);
   if (device)
     encoder.reset(new V4L2VideoEncodeAccelerator(device));
 #endif