Implement an API to allow passing an "ap" parameter to component updates.

chrome/browser/component_updater/caps_installer_win.cc

Index: chrome/browser/component_updater/caps_installer_win.cc
diff --git a/chrome/browser/component_updater/caps_installer_win.cc b/chrome/browser/component_updater/caps_installer_win.cc
index cd4cd9bc6bdccb02033832024bcde6313b902683..a02bf53b146dd136d18f28467bb73e2a44d557d2 100644
--- a/chrome/browser/component_updater/caps_installer_win.cc
+++ b/chrome/browser/component_updater/caps_installer_win.cc
@@ -110,6 +110,8 @@ class CAPSInstallerTraits : public ComponentInstallerTraits {
 
   // This string is shown in chrome://components.
   std::string GetName() const override { return "Chrome Crash Service"; }
+
+  std::string GetAp() const override { return std::string(); }
 };
 
 }  // namespace