Allow component installers to specify a map of installer attributes.

components/component_updater/default_component_installer.cc

Index: components/component_updater/default_component_installer.cc
diff --git a/components/component_updater/default_component_installer.cc b/components/component_updater/default_component_installer.cc
index 111a45f5796e3d6a99661da7f677f834acf4aeb9..fa071a20036ead274e2a9d0a2577ae613f87f1ef 100644
--- a/components/component_updater/default_component_installer.cc
+++ b/components/component_updater/default_component_installer.cc
@@ -332,7 +332,7 @@ void DefaultComponentInstaller::FinishRegistration(
     crx.version = current_version_;
     crx.fingerprint = current_fingerprint_;
     crx.name = installer_traits_->GetName();
-    crx.ap = installer_traits_->GetAp();
+    crx.installer_attributes = installer_traits_->GetInstallerAttributes();
     crx.requires_network_encryption =
         installer_traits_->RequiresNetworkEncryption();
     if (!cus->RegisterComponent(crx)) {