Move content's shell connections to the IO thread

services/shell/public/cpp/lib/shell_connection.cc

Index: services/shell/public/cpp/lib/shell_connection.cc
diff --git a/services/shell/public/cpp/lib/shell_connection.cc b/services/shell/public/cpp/lib/shell_connection.cc
index 53e85917cee34afc0c4505bb72a7c61d05f98218..c72f9732fdfabe516b47f66d3fc311813767eba7 100644
--- a/services/shell/public/cpp/lib/shell_connection.cc
+++ b/services/shell/public/cpp/lib/shell_connection.cc
@@ -10,7 +10,6 @@
 #include "mojo/public/cpp/bindings/interface_ptr.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
 #include "services/shell/public/cpp/capabilities.h"
-#include "services/shell/public/cpp/connector.h"
 #include "services/shell/public/cpp/lib/connection_impl.h"
 #include "services/shell/public/cpp/lib/connector_impl.h"
 #include "services/shell/public/cpp/shell_client.h"
@@ -21,11 +20,16 @@ namespace shell {
 // ShellConnection, public:
 
 ShellConnection::ShellConnection(shell::ShellClient* client,
-                                 mojom::ShellClientRequest request)
-    : client_(client), binding_(this) {
-  mojom::ConnectorPtr connector;
-  pending_connector_request_ = GetProxy(&connector);
-  connector_.reset(new ConnectorImpl(std::move(connector)));
+                                 mojom::ShellClientRequest request,
+                                 std::unique_ptr<Connector> connector,
+                                 mojom::ConnectorRequest connector_request)
+    : pending_connector_request_(std::move(connector_request)),
+      client_(client), binding_(this), connector_(std::move(connector)) {
+  if (!connector_) {
+    connector_ = Connector::Create(&pending_connector_request_);
+  } else {
+    DCHECK(pending_connector_request_.is_pending());
+  }
 
   DCHECK(request.is_pending());
   binding_.Bind(std::move(request));