Move shell service to toplevel shell namespace

chromecast/browser/cast_content_browser_client.cc

Index: chromecast/browser/cast_content_browser_client.cc
diff --git a/chromecast/browser/cast_content_browser_client.cc b/chromecast/browser/cast_content_browser_client.cc
index 6bf5c922bc2f13784f35f622ddb816fa96dfefd5..3fe72b17c9f169ac53d35ee6327495bb3814358d 100644
--- a/chromecast/browser/cast_content_browser_client.cc
+++ b/chromecast/browser/cast_content_browser_client.cc
@@ -68,14 +68,15 @@ namespace shell {
 
 namespace {
 #if defined(ENABLE_MOJO_MEDIA_IN_BROWSER_PROCESS)
-static std::unique_ptr<mojo::ShellClient> CreateCastMojoMediaApplication(
+static std::unique_ptr<shell::ShellClient> CreateCastMojoMediaApplication(
     CastContentBrowserClient* browser_client) {
   std::unique_ptr<media::CastMojoMediaClient> mojo_media_client(
       new media::CastMojoMediaClient(
           base::Bind(&CastContentBrowserClient::CreateMediaPipelineBackend,
                      base::Unretained(browser_client))));
-  return std::unique_ptr<mojo::ShellClient>(new media::CastMojoMediaApplication(
-      std::move(mojo_media_client), browser_client->GetMediaTaskRunner()));
+  return std::unique_ptr<shell::ShellClient>(
+      new media::CastMojoMediaApplication(
+          std::move(mojo_media_client), browser_client->GetMediaTaskRunner()));
 }
 #endif  // ENABLE_MOJO_MEDIA_IN_BROWSER_PROCESS
 }  // namespace