Introduce new user policy for loading our CCaaS extension

This change introduces a new user policy that will be leveraged for
installing/loading our CCaaS chrome component extension across agents
within a contact center setting.

DD: go/ccaas-extension, go/ccaas-supervisor-dashboard-phase1-dd

Bug: b:224875971
Change-Id: I0b3f6d928b8fc8f63d756aaa2aacda15730f3745
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3558082
Reviewed-by: Leonid Baraz <[email protected]>
Reviewed-by: Scott Violet <[email protected]>
Auto-Submit: Vignesh Shenvi <[email protected]>
Reviewed-by: Alexander Hendrich <[email protected]>
Commit-Queue: Alexander Hendrich <[email protected]>
Cr-Commit-Position: refs/heads/main@{#989866}
diff --git a/chrome/browser/prefs/browser_prefs.cc b/chrome/browser/prefs/browser_prefs.cc
index be0f0ed3..be739641 100644
--- a/chrome/browser/prefs/browser_prefs.cc
+++ b/chrome/browser/prefs/browser_prefs.cc
@@ -1400,6 +1400,7 @@
   extensions::platform_keys::RegisterProfilePrefs(registry);
   certificate_manager::CertificatesHandler::RegisterProfilePrefs(registry);
   policy::PolicyCertService::RegisterProfilePrefs(registry);
+  registry->RegisterBooleanPref(prefs::kInsightsExtensionEnabled, false);
 #if defined(USE_CUPS)
   extensions::PrintingAPIHandler::RegisterProfilePrefs(registry);
 #endif  // defined(USE_CUPS)