Make VDA::Config's converting constructor explicit

content/renderer/pepper/pepper_video_decoder_host.cc

Index: content/renderer/pepper/pepper_video_decoder_host.cc
diff --git a/content/renderer/pepper/pepper_video_decoder_host.cc b/content/renderer/pepper/pepper_video_decoder_host.cc
index 3aea65f00caebf154c86a8251d8038752ba5ac67..d3fb411d87c27bc8df08ff751b2da002fef98e37 100644
--- a/content/renderer/pepper/pepper_video_decoder_host.cc
+++ b/content/renderer/pepper/pepper_video_decoder_host.cc
@@ -502,8 +502,10 @@ bool PepperVideoDecoderHost::TryFallbackToSoftwareDecoder() {
                                     min_picture_count_);
   std::unique_ptr<VideoDecoderShim> new_decoder(
       new VideoDecoderShim(this, shim_texture_pool_size));
-  if (!new_decoder->Initialize(profile_, this))
+  if (!new_decoder->Initialize(media::VideoDecodeAccelerator::Config(profile_),
+                               this)) {
     return false;
+  }
 
   software_fallback_used_ = true;
   decoder_.reset(new_decoder.release());