Move shell service to toplevel shell namespace

media/mojo/services/mojo_decoder_factory.cc

Index: media/mojo/services/mojo_decoder_factory.cc
diff --git a/media/mojo/services/mojo_decoder_factory.cc b/media/mojo/services/mojo_decoder_factory.cc
index 0a1c2524020d723fa2a57e6e04ef45cd51d04642..5a21c212495f4a1c0c416facf78c4985e53fef29 100644
--- a/media/mojo/services/mojo_decoder_factory.cc
+++ b/media/mojo/services/mojo_decoder_factory.cc
@@ -13,7 +13,7 @@
 namespace media {
 
 MojoDecoderFactory::MojoDecoderFactory(
-    mojo::shell::mojom::InterfaceProvider* interface_provider)
+    shell::mojom::InterfaceProvider* interface_provider)
     : interface_provider_(interface_provider) {
   DCHECK(interface_provider_);
 }
@@ -25,8 +25,8 @@ void MojoDecoderFactory::CreateAudioDecoders(
     ScopedVector<AudioDecoder>* audio_decoders) {
 #if defined(ENABLE_MOJO_AUDIO_DECODER)
   interfaces::AudioDecoderPtr audio_decoder_ptr;
-  mojo::GetInterface<interfaces::AudioDecoder>(interface_provider_,
-                                               &audio_decoder_ptr);
+  shell::GetInterface<interfaces::AudioDecoder>(interface_provider_,
+                                                &audio_decoder_ptr);
 
   audio_decoders->push_back(
       new media::MojoAudioDecoder(task_runner, std::move(audio_decoder_ptr)));