Rename shell namespace to service_manager

Presubmit skipped to avoid errors being triggered by things which
aren't actually changing here.

Strictly a rename CL.

BUG=None
[email protected]
NOPRESUBMIT=True
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_site_isolation

Review-Url: https://codereview.chromium.org/2420253002
Cr-Commit-Position: refs/heads/master@{#425570}
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index e6605fb..864cb1d1 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -4923,11 +4923,11 @@
       frame_tree_.root()->current_replication_state());
 }
 
-shell::InterfaceProvider* WebContentsImpl::GetJavaInterfaces() {
+service_manager::InterfaceProvider* WebContentsImpl::GetJavaInterfaces() {
   if (!java_interfaces_) {
-    shell::mojom::InterfaceProviderPtr provider;
+    service_manager::mojom::InterfaceProviderPtr provider;
     BindInterfaceRegistryForWebContents(mojo::GetProxy(&provider), this);
-    java_interfaces_.reset(new shell::InterfaceProvider);
+    java_interfaces_.reset(new service_manager::InterfaceProvider);
     java_interfaces_->Bind(std::move(provider));
   }
   return java_interfaces_.get();