Move InterfaceProvider into the shell::mojom namespace like the rest of the shell interfaces.

media/mojo/services/default_mojo_media_client.cc

Index: media/mojo/services/default_mojo_media_client.cc
diff --git a/media/mojo/services/default_mojo_media_client.cc b/media/mojo/services/default_mojo_media_client.cc
index b6967993916295dc54813c8eb410aa9f1322d664..4facbd1d88aa055325a977682b496125bf269cc1 100644
--- a/media/mojo/services/default_mojo_media_client.cc
+++ b/media/mojo/services/default_mojo_media_client.cc
@@ -67,7 +67,7 @@ class DefaultMojoMediaClient : public MojoMediaClient {
   }
 
   scoped_ptr<CdmFactory> CreateCdmFactory(
-      mojo::InterfaceProvider* /* service_provider */) override {
+      mojo::shell::mojom::InterfaceProvider* /* service_provider */) override {
     return make_scoped_ptr(new DefaultCdmFactory());
   }