Change userid from a uint32_t to a string guid

components/resource_provider/resource_provider_app.h

Index: components/resource_provider/resource_provider_app.h
diff --git a/components/resource_provider/resource_provider_app.h b/components/resource_provider/resource_provider_app.h
index 0f2d0f08d8704508d9c859e8f6e7cccd920a6c72..14b867ab618bcc6318e73e9ff86aace927182e44 100644
--- a/components/resource_provider/resource_provider_app.h
+++ b/components/resource_provider/resource_provider_app.h
@@ -26,7 +26,7 @@ class ResourceProviderApp : public mojo::ShellClient,
  private:
   // mojo::ShellClient:
   void Initialize(mojo::Connector* connector, const std::string& url,
-                  uint32_t id, uint32_t user_id) override;
+                  const std::string& user_id, uint32_t id) override;
   bool AcceptConnection(mojo::Connection* connection) override;
 
   // mojo::InterfaceFactory<ResourceProvider>: