Rename shell namespace to service_manager

services/tracing/public/cpp/provider.cc

Index: services/tracing/public/cpp/provider.cc
diff --git a/services/tracing/public/cpp/provider.cc b/services/tracing/public/cpp/provider.cc
index 95db0d93ab90966d5f3b01fd991b7beae626bf06..47e0ab0c0fc6d74e1777fd84f2bcbb549f913c22 100644
--- a/services/tracing/public/cpp/provider.cc
+++ b/services/tracing/public/cpp/provider.cc
@@ -42,7 +42,8 @@ Provider::~Provider() {
   StopTracing();
 }
 
-void Provider::Initialize(shell::Connector* connector, const std::string& url) {
+void Provider::Initialize(service_manager::Connector* connector,
+                          const std::string& url) {
   {
     base::AutoLock lock(g_singleton_lock.Get());
     if (g_tracing_singleton_created)